缩略语

缩略语 A... AA Auto Answer AAB All-to-All Broadcast AAL Asynchronous Transfer Mode Adaption Layer AAP Applications Access Point [DEC] AARP AppleTalk Address Resolution Protocol AAS All-to-All Scatter AASP ASCII Asynchronous Support Package AAT Average Access Time AATP Authorized Academic Training Program [Microsoft] ABC * Atanasoff-Berry Computer (First digital calculating machine that used vacuum tubes) ABEND Abnormal End ABI Application Binary Interface ABIOS Advanced BIOS ABIST Automatic Built-In Self-Test [IBM] ABLE Adaptive Battery Life Extender ABR Available Bit Rate ABRS Automated Book Request System [British Library] ABS Address Book Synchronization [IBM] + Absolute ABT Abort ABTS ASCII Block Terminal Services AC Autocheck + Automatic Computer + Alternating Current ACAP Application Configuration Access Protocol ACC Accumulator ACCMAIL Accessing the Internet Via Email ACD Automatic Call Distribution ACDI Asynchronous Communications Device Interface ACE Access Control Encryption/Entry + Adobe Certified Expert + Advanced Computing Environment [SCO] + Adverse Channel Enhancements [Microcom] + * Automatic Computing Engine ACF Access Control Field + Advanced Communications Function ACH Automated Clearing House ACIAS Automated Calibration Interval Analysis System ACIS American Committee for Interoperable Systems ACK Acknowledgment ACL Access Control List ACM Association for Computing Machinery Audio Compression Manager [Microsoft] ACMS Application Control Management System ACP Ancillary Control Program + Auxiliary Control Process ACPI Advanced Configuration and Power Interface ACR Allowed Cell Rate ACROSS Automated Cargo Release and Operations Service System ACS Access + Access Control Set + Access Control System + * Advanced Computer System [IBM] + Anti Curl System + Asynchronous Communication Server ACSS Audio Cascading Style Sheets ACTS Automated Computer Time Service ACTT Advanced Communication and Timekeeping Technology [Seiko] ACU Automatic Calling Unit ACVC Ada Compiler Validation Capacity A/D Analog to Digital ADA Automatic Data Acquisitions + (Programming Language named after Augusta Ada Lovelace) ADB Apple Desk Bus ADC Adaptive Data Compression (protocol) [Hayes] + Add with Carry + Analog to Digital Converter ADCCP Advanced Data Communication Control Procedures ADD Automatic document Detection [WordPerfect] ADF Automatic document Feeder + Automatically Defined Function .ADF Adapter Description File (file name extension) ADI AutoCad/AutoDesk Device Interface (driver) ADL Address Data Latch ADLAT Adaptive Lattice Filter ADLC Adaptive Lossless Data Compression [IBM] + Asynchronous Data Link Control ADMACS Apple document Management And Conrol System ADMD Administrative Management Domain [X.400] .ADN Add In Utility (file name extension) [Lotus 1-2-3] [LDC] ADO Active Data Objects ADP Automatic Data Processing ADPCM Adaptive Differential Pulse Code Modulation ADR Address ADS Application Development Solutions [AT&T] + Application Development System + Automatic Distribution System ADSC Address Status Changed + Adobe document Structuring Conventions ADSI Active Directory Service Interface [Microsoft] + Analog Display Services Interface ADSL Asymmetric Digital Subscriber Line ADSP AppleTalk Datastream Protocol ADSR Attack, Decay, Sustain, Release ADT Abstract Data Type + Application Data Types ADU Automatic Dialing Unit AE Above or Equal AEB Analog Expansion Bus [Dialogic] AEC Architecture, Engineering, Construction AES Advanced Encryption Standard AESA ATM End System Address AF Auxiliary carry Flag AFA Accelerated File Access AFC Automatic Font Change + Automatic Frequency Control AFD Automatic File Distribution AFDW Active Framework for Data Warehousing [Microsoft] AFI Authority and Format Identifier AFII Association for Font Information Interchange AFIRM Automated Fingerprint Image Reporting and Match AFIS Automated Fingerprint Identification System .AFM Adobe Font Metrics (file name extension) [Adobe Systems] AFP Advanced Function Presentation [IBM] + Advanced Function Printing + Appletalk Filing Protocol [Macintosh] AFS Andrew File System (protocols) AFTP Anonymous File Transfer Protocol AGA Advanced Graphics Adapter AGC Automatic Gain Control AGP Accelerated/Advanced Graphics Port AGRAS Antiglare-Antireflective-Antistatic AGU Address-Generation Unit AHS Automated Highway Systems AI Analog Input + Artificial Intelligence AIA Applications Integration Architecture [DEC] AIC AIXwindows Interface Composer [IBM] AIF Audio Interchange Format AIIM Association for Information and Image Management AIM AOL Instant Messenger AIN Advanced Intelligent Network [Bell Atlantic] AIR Architecture Implementation Review AIS Automated Identification System [NCIC] + Automated Information Systems AISB Association of Imaging Service Bureaus AISP Association of Information Systems Professionals AIT Advanced Intelligent Tape (drive) [Sony] AIX Advanced Interactive Executive [IBM] ALC Arithmetic and Logic Circuits + Automatic Level Control ALE Address Latch Enable + Application Linking and Embedding ALGOL Algorithmic Oriented Language (see IAL) ALIBI Adaptive Location of Internetworked Bases of Information ALINK Active Link [HTML] ALIWEB Archie Like Indexing in the Web [Internet] ALN Asynchronous Learning Network ALR Advanced Logic Research, Inc. ALT Alternate (mode) ALT. Alternate lifestyle [USENET Newsgroup Category] ALU Arithmetic Logic Unit AMA Automatic Message Accounting AMANDDA Automated Messaging and Directory Assistance AMASS Archival Management and Storage System AMD Active Matrix Display + Advanced Micro Devices, Inc. AMI Alternate Mark Inversion + American Megatrends, Inc. AMMA Advanced Memory Management Architecture [Everex Systems] AMPS Advanced Mobile Phone Service ANCOVA Analysis of Covariance ANDF Architecture-Neutral Distribution Format ANI Automatic Number Identification .ANI Animated Cursor (file name extension) [Microsoft] ANN Artificial Neural Network .ANN Annotations (file name extension) [IBM] ANOVA Analysis Of Variance ANSI American National Standards Institute ANX Automotive Network Exchange [Chrysler/Ford/ General Motors] AO Analog Output AOCE Apple Open Collaboration Environment AO/DI Always On/Dynamic ISDN AOE Application Operating Environment [AT&T] AOL America Online AOS Add Or Subtract AP Adjunct Processor + Application Processor A/P Accounts Payable APA Adaptive Packet Assembly + All Points Addressable + Arithmetic Processing Accelerator APAR Authorized Program Analysis Report [IBM] APAREN Address Parity Enable [IBM] APCUG Association of PC User Groups APDU Application Protocol Data Units API Application Program Interface APIC Advanced Programmable Interrupt Controller (bus) [Intel] APIS Advanced Passenger Information System APL * A Programming Language (Mathematics) APM Advanced Power Management [IBM] APNIC Asia-Pacific Network Information Center [Internet] APOP Authenticated Post Office Protocol .APP Application (file name extension) [R:Base] APPC Advanced Program-to-Program Communications [IBM] APPI Advanced Peer-to-Peer Internetworking APPLETS Applications APPN Advanced Peer-to-Peer Networking [IBM] APPS Applications APRP Adaptive Pattern Recognition Processing APS Advanced Photo System + Advanced Printing Service [IBM] Asynchronous Protocol Specification APSE ADA Programming Support Environment APT Address Pass Through + Advanced Parallel Technology + Automatically Programmed Tools A/R Accounts Receivable ARA AppleTalk Remote Access ARAG Antireflective-Antiglare ARAS Antireflective-Antistatic .ARC Archive (file name extension) ARCA Advanced RISC Computing Architecture ARCnet Attached Resource Computer Network .ARJ Compressed File (file name extension) [Jung] ARL Adjusted Ring Length ARLL Advanced Run Length Limited ARM Advanced RISC Machine (processor) + Annotated Reference Manual + Asynchronous Response Mode ARMA Association of Records Managers and Administrators ARP Address Resolution Protocol [Novell] ARPANET Advanced Research Projects Agency Network ARPL Adjust Requested Privilege Level ARTA Apple Real Time Architecture ARTIC A Real-Time Interface Coprocessor [IBM] ARTS Asynchronous Remote Takeover Server .ARTS Cultural Groups (Domain Name) [Internet] ARTT Asynchronous Remote Takeover Terminal ARQ Automatic Repeat Request ARU Audio Response Unit AS Autonomous System [Internet] ASAI Adjunct Switch Application Interface [AT&T] ASAP As Soon As Possible + Automatic Switching And Processing AS3AP ANSI SQL Standard Scalable and Portable ASB Advanced System Buffering [Intel] .ASC ASCII text (file name extension) ASCC * Automatic Sequence Controlled Calculator [IBM] ASCII American Standard Code for Information Interchange ASF Active/Advanced Streaming Format [Microsoft] ASIC Application-Specific Integrated Circuit ASIT Advanced Security and Identification Technology ASL Adaptive Speed Levelling ASLM Apple Shared Library Manager [Macintosh] .ASM Assembler Source Language (file name extension) ASMP Asymmetric Multprocessing ASN Abstract Syntax Notation + Autonomous System Number ASO Automated Systems Operations ASP Active Server Page [Microsoft] + Application/Authorized Service Provider + Association of Shareware Professionals .ASP Active Server Page (file name extension) ASPI Advanced SCSI Programming Interface [Adaptec] ASPS Advanced Signal Processing System ASR Address Space Register + Automatic Send-Receive + Automatic Speech Recognition AST AST Research, Inc. (named from first initials of the founders: Albert Wong, Safi Qureshey, Thomas Yuen) AS/U Advanced Server for Unix ASYNC Asynchronous AS/400 Application System/400 [IBM] AT Advanced Technology + Attention ATAPI Advanced Technology Attachment Packet Interface ATDP Attention Dial Pulse ATDT Attention Dial Tone ATE Automated Test Equipment ATG Advanced Technology Group ATH Attention Hang-Up (Modem command) ATL Active Template Library ATM Adobe Typeface Manager + Air Traffic Management + Asynchronous Transfer Mode + Automated Teller Machine ATPS AppleTalk Printing Services [Macintosh] ATR Automatic Terminal Recognition ATS Administrative Terminal System + Apple Terminal Services AT&T American Telephone and Telegraph ATTN Attention ATTRIB Attribute (also ATR) ATX Advanced Technology Extended [Intel] ATZ Attention Restore configuration profile from nonvolatile RAM (Modem command) .AU Audio (file name extension) AUDIT Automated Data Input Terminal AUI Attachment/Autonomous Unit Interface AUP Acceptable Use Policy [Internet] AUTO Automatic AUTOEXEC Automatic Execution AUX Auxiliary + (First Serial Port) AV Audio/Video + Audiovisual + Authenticity Verification AVA Audio Visual Authoring [IBM] AVC Audio Visual Connection [IBM] AVD Alternating Voice and Data AVG Average AVI Audio Visual Interleave [Microsoft] AVR Automatic Voice Recognition AVT Applied Voice Technology AWE Advanced Wave Effects [Creative Lab] AWG American Wire Gage AWK (Unix language named after its authors... Al Aho, Peter Weinberger and Brian Kernighan) AWS Advanced Workstations and Systems (group) [IBM] AWT Abstract Window Toolkit [Java] AX Architecture Extended + Automatic Transmission B... BACP Bandwidth Allocation Control Protocol BAK Binary Adaptation Kit [Microsoft] .BAK Backup (file name extension) BAL Basic Assembly Language BALUN Balanced Unbalanced (device) BAM Boyan Action Module BAPI Business Application Programming Interface [SAP] BARTS Bell Atlantic Regional Timesharing .BAS Basic Language (file name extension) BASH Bourne Again Shell [Unix] BASIC Beginner's All-purpose Symbolic Instruction Code BASM Built-In Assembler BAT Block Address Translation .BAT Batch Processing (file name extension) BBS Bulletin Board System BCC Block Check Character BCC: Blind Carbon Copy BCD Binary Coded Decimal B-CHANNEL Bearer Channel BCL Batch Command Language BCN Beacon BCP Best Current Practice + Bulk Copy Program BCPL Basic Computer Programming Language BCR Byte Count Register BCS Bar Code Sorter BDA Bios Data Area BDC Backup Domain Controller BDE Borland Database Engine [Borland] BDLS Bidirectional Loop Switching BDOS Basic Disk Operating System BDR Bus Device Request BDSL Broadband ADSL BE Below or Equal BECN Backward Explicit Congestion Notification BEDO Burst Extended Data Out BEL Bell BELLCORE Bell Communications Research BER Basic Encoding Rules + Bit Error Rate BERT Bit Error Rate Test/Tester BF Bad Flag B/F Background/Foreground .BFC Briefcase (file name extension) [Microsoft] BFF Binary File Format [IBM] BFT Binary File Transfer BFTP Batch FTP BGA Ball Grid Array BGCOLOR Background Color [HTML] BGE Branch if Greater or Equal .BGI Borland Graphic Interface (file name extension) BGP Border Gateway Protocol BGT Branch if Greater Than BHI Branch if Higher BHIS Branch if Higher or Same BI Binary Input .BIB Bibliography (file name extension) BiDi Bi-Directional BIFET Bipolar Field Effect Transistor BIFF Binary Interchange File Format BIM Beginning of Information Marker .BIN Binary (file name extension) BINAC * Binary Automatic Computer BIND Berkeley Internet Name Domain BINHEX Binary Hexadecimal BIOS Basic Input/Output System BIS Business Information System BISDN Broadband Integrated Services Digital Network BIST Built-In Self-Test BiSYNC (See BSYNC) BIT Binary Digit BITNET Because It's Time Network BITNIC Bitnet Network Information Center BIU Bus Interface Unit BIW Business Intelligence Warehouse [SAP] BIX Byte Information Exchange (BBS) BIZ. Business [USENET Newsgroup Category] .BK! Backup (file name extension) [WordPerfect] .B~K Backup (file name extension) BKSP Backspace BL Backlit + Bit Line BLAST Blocked Asynchronous Transmission (protocol) [Communications Research Group] .BLD BASIC Bload Graphics (file name extension) BLE Branch if Less or Equal BLER Block Error BLK Block BLMC Buried Logic Macrocell BLOB Binary Large Object BLOS Branch if Lower Or Same BMI Branch if Minus BMIC BusMaster Interface Controller [Intel] BMP Basic Mapping Support + Batch Message Processing Program .BMP Bitmap (file name extension) [Paintbrush Format] BNC Bayonet Neill-Concelman (connector used with coaxial cable invented by Mr. Neill-Concelman) BNE Branch if Not Equal BNF Backus-Naur Form (also Backus-Normal Form) [developed by John Backus and Peter Naur] BNS Backbone Network Service BO Binary Output BoB Break-out Box BOC Basic Operator Console BOF Beginning Of File BOM Basic Online Memory [IBM] + Beginning Of Message BOND Bandwidth On Demand BOOTP Bootstrap Protocol [Internet] BOPS Billion Operations Per Second BORPQU Borland Pro Quattro BORQU Borland Quattro BOS Basic Operating System BOT Beginning Of Table + Beginning of Tape + Robot BP Base Pointer BPB BIOS Parameter Block BPDU Bridge Protocol Data Unit BPI Bits Per Inch BPL Branch if Plus BPP Bits Per Pixel BPS Bits Per Second + Bytes Per Second BPSK Binary Phase Shift Keying BR Bad Register BRGC Binary Reflected Gray Code BRI Basic Rate Interface + Brain Response Interface BS Backspace BSAM Basic Sequential Access Method BSC Binary Synchronous Communication .BSC Boyan script (file name extension) [Boyan Communications] BSCS Bachelor of Science (Degree) in Computer Science BSD Berkely Software/Standard Distribution BSF Bit Scan Forward BSI British Standards Institute BSM Basic Storage Module [IBM] BSP Bulk Synchronous Parallelism BSR Bit Scan Reverse BS-RAM Burst Static RAM BSS Block Started by Symbol BSV BASIC Bsave Graphics (file name extension) BSY Busy BSYNC Binary Synchronous Communications (protocol) BT Bit Test BTAM Basic Telecommunications Access Method [IBM] BTB Branch Target Buffer BTC Bit Test and Complement BTOA Binary To ASCII BTP Batch Transfer Program BTR Bit Test and Reset BTS Bit Test and Set BU Branch Unit BUBL Bulletin Board for Libraries [Janet] BUF Buffer BUS Broadcast and Unknown Server BVH Base Video Handler BWM Block-Write Mode B2X Binary To Hexadecimal [REXX] BYTE Binary Element String C... C C Programming Language .C C source code (file name extension) [C] CA Collision Avoidance .CAB Cabinet (file name extension) [Microsoft] CAD Computer Aided Design CADD Computer Aided Design and Drafting CADE Client/server Application Development Environment CAE Client Application Enabler + Common Applications Environment + Computer Aided Engineering CAEN Chemically Assembled Electronic Nanocomputer CAEX Computer Aided Exploration CAG Column Address Generator CAI Computer Aided Instruction CAIRN Collaborative Advanced Interagency Research Network CAL Calendar + Client Access License + Computer Aided Learning CALS Computer-Aided Acquisition in Logistic Support CAM Common Access Method + Computer Aided Manufacturing + Contents Addressable Memory CAN Cancel CANBUS Conroller Area Network Bus CAP Carrierless Amplitude and Phase-Modulation + Central Arbitration Point + Communication Application Platform + Competitive Access Provider + Computer Aided Publishing .CAP Capture (file name extension) CAPD Computing To Assist Persons With Disabilities [Johns Hopkins University] CAPE Concurrent Art-to-Product Environment CAPS Capitals (Upper Case Letters) + Cassette Programming System CARL Colorado Alliance of Research Libraries [Internet] CAS Column Address Select + Communications Application Specification + Computer Aided Styling CASE Computer Aided Software Engineering CASL Crosstalk Application scripting Language [DCA] CASS Computer Assisted Search Service CASSIS Classified and Search Support Information System CAT Computer Adaptive Test + Computer Aided Testing + Computer Aided Tomography + Computer Aided Transcription + Concatenate .CAT Catalog (file name extension) CATS Computer Assisted Training System CAT SCAN Computerized Axial Tomography Scan CATV Community Antenna Television (this was the original name for what is now known as Cable TV) CAU Controlled Access Unit CAV Constant Angular Velocity CAVE Computer Automatic Virtual Environment CBC Cipher Block Chaining CBCR Channel Byte Count Register CBDS Connectionless Broadband Data Service CBEMA Computer and Business Equipment Manufacturers Association CBGA Ceramic Ball Grid Array CBI Computer Based Instruction\Instrumentation CBL Computer Based Learning .CBL COBOL source code (file name extension) CBMS Computer-Based Mail System CBR Case Based Reasoning + Constant Bit Rate CBT Computer Based Training CBW Convert Byte to Word CBX Computer-Controlled Branch Exchange CC Cluster Controller CC: Carbon Copy CCD Charged-Coupled Device CCFT Cold Cathode Fluorescent Tube CCI Common Client Interface CCIE Cisco Certified Internetwork Expert [Cisco] CCITT Comite Consultatif International Telegraphique et Telephonique/ Consultative Committee for International Telegraph and Telephone CCL Connection/Cursor Control Language CCP Certified Computing Professional + Console Command Processor CCS Common Command Set + Common Communications Services + Common Communications Support + Continuous Composite Servo .CCS Color Calibration System (file name extension) CCSD Cellular Circuit-Switched Data CD Carrier Detect + Change Directory + Collision Detection + Color Display + Compact Disk C/D Control Data C2D Character To Decimal [REXX] CDA Compound document Architecture [DEC] .CDA CD Audio Track (file name extension) CDBT Compact Disk-Based Training CDC Control Data Corporation CD_CHRDY Card Channel Ready [IBM] CD-DA Compact Disk -Digital Audio CDDI Copper Distributed Data Interface CDE Common Desk Environment + Complex Data Entry CD-E Compact Disk - Erasable CDF Channel Definition Format .CDF Comma Delimited Format (file name extension) CDFS Compact Disc File System [Microsoft] CD+G Compact Disk plus Graphics CD-I Compact Disk - Interactive CDIA Certified document Imaging Architect CDL Computer Design Language CDMA Code Division Multiple Access CDMF Commercial Data Masking Facility [IBM] CD-MO Compact Disk - Magneto Optical CDOS Concurrent Disk Operating System CDP * Certificate In Data Processing (First certification for Computer Professionals) CDPD Cellular Digital Packet Data CDR Call Detail Record + Call Detail Recording + Common Data Representation CD-R Compact Disk - Recordable CDRAM Cache DRAM CD-RDx Compact Disk - Read Only Memory Data Exchange Standard CDRL Contract Data Requirements List CD-ROM Compact Disk - Read Only Memory CD-RTOS Compact Disk - Real Time Operating System CD-RW Compact Disk - Re-Writable CDS Current Directory Structure CDSA Common Data Security Architecture CDSL Consumer Digital Subscriber Line [Rockwell] .CDT Corel Draw Template (file name extension) CD-V Compact Disk - Video CD-WO Compact Disk - Write Once .CDX Compound Index (file name extension) [Fox Pro] CD-XA Compact Disk - Extended Architecture CE Cache Enable + Chip Enable + Collision Elimination + Convert Enable CEG Continuous Edge Graphics CEI Conducted Electromagnetic Interference CELP Card Edge Low Profile (socket) [Intel] CEMS Constituent Electronic Mail System CEOP Conditional End Of Page CER Canonical Encoding Rules CERN The Europien Particle Physics Laboratory (initials originally from Conseil European pour la Recherche Nucleaire) CERT Computer Emergency Response Team CFB Cipher Feedback + Configurable Function Block .CFG Configuration (file name extension) CFM Code Fragment Manager [Macintosh] + Cubic Feet Per Minute CFML ColdFusion Markup Language CFR Computerized Facial Recognition CFS Caching/Common File System CFV Call For Votes [Bitnet] CG Control Gate CGA Color Graphics Adapter CGE Common Graphics Environment CGI Computer Generated Images + Computer Graphics Interface CGI-BIN Common Gateway Interface - Binary .CGM Computer Graphics Metafile (file name extension) + Graph (file name extension) [Lotus 1-2-3] [LDC] CGS Continuous-Grain Silicon CHAP Challenge-Handshake Authentication Protocol CHAR Character CHAT Conversational Hypertext Access Technology [Internet] CHCK Channel Check CHCP Change Code Page CHDIR Change Directory CHFN Change Finger [Unix] CHGRP Change Group CHIPS Clearinghouse Interbank Payments System .CHK CHKDSK (file name extension) CHKDSK Check Disk CHMOD Change Mode CHOWN Change Owner CHP Chapter CHR Character CHRP Common Hardware Reference Platform CHS Cylinder Head Sector CHTML Compressed HTML CI Component Interface CIA Current Instruction Address CIAC Computer Incident Advisory Capability CICS/VS Customer Information Control System/ Virtual Storage [IBM] CID Charge-Injection Device + Configuration/Installation/Distribution CIDR Classless Inter-Domain Routing CIF Common Interchange/Intermediate Format + Crystallographic Information File + Customer Information Feed CIFS Common Internet File System CIM Common Information Model + CompuServe Information Manager + Computer Integrated Manufacturing CIO Chief Information Officer CIOCS Communication Input/Output Control System CIP Command Interface Port + Common Indexing Protocol CIR Committed Information Rate CIRC Circular Reference + Cross-Interleaved Reed-Solomon Code CIS Card Information Structure + Client Information System + CompuServe Information Service + Computer Information Systems + Contact Image Sensor + Customer Information System CISC Complex Instruction Set Computing CIT Computer-Integrated Telephony CIVR Computer and Interactive Voice Response CIX Commercial Internet Exchange + Compulink Information Exchange CJLI Command Job Language Interpreter CKD Count Key Data (device) CLAR Channel Local Address Register CLASS Client Access to Systems and Services + Cooperative Library Agency for Systems and Services + Custom Local-Area Signaling Services CLC Clear Carry Flag CLD Clear Direction Flag CLEC Competitive Local Exchange Carrier CLI Call-Level Interface + Clear Interrupt Flag + Client Library Interface + Command Line Interface CLIB C Library CLID Calling Line Identification CLIST Command List CLK Clock CLNP Connectionless Network Protocol CLOS Common Lisp Object System CLP Cell Loss Priority + Constraint Logic Programming .CLP Clipboard (file name extension) [Windows] CLS Clear Screen CLSID Class Identifier CLTP Connectionless Transport Protocol CLTS Clear Task Switch Flag CLTV Constant Linear Time Velocity CLUI Command Line User Interface CLUT Color Look-Up Table CLV Constant Linear Velocity CM Centimeter + Control Mark + Corrective Maintenance CMA Concert Multi-thread Architecture CMC Common Mail Calls + Common Messaging Calls + Communication Management Configuration + Complement Carry Flag + Computer-Mediated Communication [Internet] CMD Circuit Mode Data .CMD Command (file name extension) CMF Creative Music Format CNIDR Clearinghouse for Network Information and Discovery and Retrieval [Internet] CMIP Common Management Information Protocol CMIS Common Management Information Services/System CML Chemical Markup Language + Conceptual Modelling Language + Computer Managed Learning + Current Mode Logic CMM Capability Maturity Model CMMS Computerized Maintenance Management Software CMMU Cache/Memory Management Unit [Motorola] CMOS Complementary Metal-Oxide Semiconductor CMOV Conditional Move CMP Compare + Computer CMPS Compare word String CMS Code Management System + Compiler Monitor System + Conversation Monitor System CMVC Configuration Management Version Control [IBM] CMW Compartmented Mode Workstation CMY Cyan-Magenta-Yellow (color model) CMYK Cyan-Magenta-Yellow-Black (color model) CNA Certified NetWare/Network Administrator CNAPS Co-Processing Node Architecture for Parallel Systems CNC Computerized Numerical Control CNE Certified NetWare Engineer .CNF Configuration (file name extension) CNG Calling (tone) CNI Certified Novell Instructor [Novell] CNIDR Clearinghouse for Networked Information and Retrieval CNN Composite Network Node CNR Carrier to Noise Ratio CNSS Core Nodal Switching Subsystem [Internet] .CNT Contents (file name extension) CNV Conventional (pertaining to Memory) CNVT Convert CNX Certified Network Expert CO Central Office + Command Output + Convert Out COAST Card On A Stick (module) COAX Coaxial Cable COB Chip-On-Board .COB COBOL source code (file name extension) COBOL Common Business-oriented Language (See HLL) .COD Code List (file name extension) CODASYL * Conference on Data System Languages (Group that designed COBOL) CODE Client-Server Open Development Environment CODEC Coder/Decoder + Compression/Decompression COEM Commercial Original Equipment Manufacturer COFF Common Object File Format [Unix] COGO Coordinate Geometry (Programming Language) COL Collision + Computer Oriented Language COLD Computer Output to Laser Disk COLL Collision COM Component Object Model [Microsoft] + Computer Output Microfilm .COM Command (file name extension) + Commercial Business (Domain Name) [Internet] COM1 First serial Port (asynchronous port) COM2 Second serial Port COM3 Third serial Port COM4 Fourth serial Port COMDEX Computer Dealers Exposition COMET Cornell Macintosh Terminal Emulator COMP Compare + Communications COMP. Computers [USENET Newsgroup Category] COMSAT Communications Satellite Corporation CON Console (includes Keyboard and Screen) COND Condition CONFIG Configuration CONS Connection-Oriented Network Service CONTONE Continuous Tone COPICS Communications Oriented Production Information and Control System [IBM] COR Common Object Runtime CORBA Common Object Request Broker Architecture CoREN Corporation for Research and Enterprise Network COS Compatible Operating System COSE Combined Office Standard Environment + Common Open Software/Systems Environment COSMIC Computer Software Management and Information Center [NASA] COSMOS Computer System for Mainframe Operations COSS Common Object Services Specification COTS Commercial Off-The-Shelf CP Copy Protected CPA Certified Public Accountant CPC Constant Point Calculation CPCS Check Processing Control System [IBM] CPE Central Processing Element + Customer Premises Equipment + Customer Provided Equipment .CPE Cover Page (file name extension) CPG Clock Pulse Generator CPI Characters Per Inch + Clock Per Instruction + Common Programming Interface [IBM] .CPI Code Page Information (file name extension) [MS-DOS] CPI-C Common Programming Interface for Communications [IBM] CPIO Copy In and Out [Unix] CPL Current Privilege Level .CPL Control Panel (file name extension) CPLD Complex Programmable Logic Device CPM Critical Path Method CP/M Control Program for Microcomputers [Digital Research] CPS Characters Per Second + Cycles Per Second CPT Command Pass Through CPU Central Processing Unit CPW Commercial Processing Workload [IBM] CR Carriage Return CRAM Cyberspatial Reality Advancement Movement CRAYON Create Your Own Newspaper CRC Cyclic Redundancy Check .CRD Cardfile (file name extension) + Chord (music file name extension) CREN Computer Research Education Network + Corporation for Research and Education Networking CRF Cable Retransmission Facility + Cross Reference File CRI Color Reproduction Indices CR/LF Carriage Return/Line Feed CRM Customer Relationship Management CROM Control Read Only Memory CRT Cathode Ray Tube CRTC CRT Controller CRUD Create, Retrieve, Update, Delete CS Chip Select + Clear to Send + Code Segment C/S Client/Server CSA Calendaring and Scheduling API [IBM] CSAR Channel System Address Register CSCW Computer Supported Cooperative Work CSD Circuit-Switched Data + Computer Services Department + Corrective Service Diskette [IBM] CSDS Circuit Switched Data Service CSE Certified System Engineer CSFI Communication Subsystem For Interconnection CSG Constructive Solid Geometry + Consulting Services Group [Lotus] CSI Command Sequence Introducer + CompuServe Incorporated CSID Call Subscriber ID CSL Computer Sensitive Language CSLIP Compressed Serial Line Interface Protocol [Internet] CSM Code Set Map (file) + Communications Services Manager CSMA/CA Carrier Sense Multiple Access/with Collision Avoidance CSMA/CD Carrier Sense Multiple Access/with Collision Detection CSMS Customer Support Management System CSN Card-Select Number CSNET Computer Science Network CSO Central Services Organization CSP Certified Systems Professional + Chip-Scale Packaging + Commercial Service Provider +   Commercial Subroutine Package + CompuCom Speed Protocol [CompuCom] + Communicating Sequential Processes + Cross System Product [IBM] CSPDN Circuit Switched Public Data Network CSRAM Custom Static RAM CSS * Continuous System Simulator (Language) CSS Cascading Style Sheet [Microsoft] + Contact Start-S CSSM Client-Server Systems Management [IBM] CS/SS Card Service/Socket Service CSTA Computer-Supported Telephony Applications CSU Channel Service/Switching Unit CSV Circuit-Switched Voice + Comma-Separated value/Variable + Common Services Verbs (interface) [Microsoft] C&T Chips and Technologies CTB Cipher Type Byte CTC Channel To Channel CTCP Client-To-Client Protocol CTI Computer-Telephony Integration CTOS Computerized Tomography Operating System + Convergent Technologies Operating System CTPA Coax-to-Twisted-Pair Adapter CTRCO * Calculating,Tabulating,Recording Company (The name of this company was changed to "International Business Machines" by Thomas J. Watson, Sr.) CTRL Control CTS Clear To Send + Computer Telephony Solution [IBM] + Customer Telephone System CTSS * Compatible Time Sharing System CUA Common User Access [IBM] CUB Cursor Backward CUD Cursor Down CUE Custom Updates and Extras (card) [Egghead Software] CUF Cursor Forward CUI Character-Oriented User Interface + Common User Interface [IBM] CUP Cursor Position CUPID Completely Universal Processor I/O Design [AST] .CUR Cursor (file name extension) CUSIP Committee for Uniform Security Identification Procedures [U.S. Treasury] CUT Control Unit Terminal CUTE Clarkston University Terminal Emulator CUU Cursor Up CVF Compressed Volume File CVGA Color Video Graphics Array CVIA Computer Virus Industry Association CVT Convert CVW CodeView for Windows CWD Convert Word to Double Word + Change Working Directory [Internet] CWIS Campus Wide Information Service/System [Internet] + Community Wide Information Service/System [Internet] C2X Character To Hexadecimal [REXX] CYL Cylinder CYMK Cyan-Yellow-Magenta-Black (color model) D... D/A Digital to Analog DAA Data Access Arrangement + Decimal Adjust for Addition DAB Digital Audio Broadcasting DAC Data Acquisition and Control + Digital to Analog Converter + Dual Attachment Concentrator DACL Discretionary Access Control List DAD Desk Application Director [Borland] DAE Digital Audio Extraction DAI Distributed Artificial Intelligence DAL Data Access Language [Apple Computer] + Disk Access Lockout DAM Data Acquisition and Monitoring DAMPS Digital AMPS DAO Data Access Object [Microsoft] DAP Data Access Protocol [DEC] + Developer Assistance Program DAPIE Developers Application Programming Interface Extensions DARI Database Application Remote Interface [IBM] DARMS Digital Alternate Realization of Musical Symbols DART Digital Audio Reconstruction Technology DAS Decimal Adjust for Subtraction + Dual-Attached Station DASD Direct Access Storage Device [IBM] DAT Digital Audio Tape + Disk Array Technology .DAT Data (file name extension) DATACOM Data Communications DAV Digital Audio-Video DAVIC Digital Audio-Visual Council dB Decibel DB Data Base + Data Buffer + Device Bay dBA Adjusted Decibel DBC Device Bay Controller DBCS Delivery Bar Code Sorter + Double-Byte Character Set .DBF Database (file name extension) DBIS Dun & Bradstreet Information Services DBM Data Base Manager DBMS Data Base Management System DBR DOS Boot Record DBS Data Base Server + Direct (to home) Broadcast (satellite) System DBV Digital Broadcast Video DB2 Database 2 DC Data Collection + Data Communication + Data Control + Device Control + Direct Current D2C Decimal To Character [REXX] DCA Digital Communications Associates + document Content Architecture [IBM] DCAF Distributed Console Access Facility [IBM] DCAM Digital Camera + Direct Chip Attach Module DCB Device Control Block + Disk Coprocessor Board [Novell] DCC Data Country Code + Digital Command Control + Digital Compact Cassette + Direct Cable/Client Connection + Display Combination Code DCD Data Carrier Detect DCE Data Circuit-Terminating Equipment + Data Communications Equipment + Distributed Computing Environment [OSF] + Distributed Computing Equipment DCED Distributed Computing Environment Daemon DCF Data Communication Facility [IBM] + Data Compression Facility + Data Count Field [IBM] + Driver Configuration File [Lotus] D-CHANNEL Data Channel DCI Display Control Interface DCL Data Control Language + Declaration + DEC Command Language [DEC] + Device Clear + Digital Control Logic + Digital Command Language [Digital] DCOM Distributed Component Object Model DCP Digital Light Processing [TI] DCS Data Collection System + Data Control System + Desk Color Separation + Distributed Control System DCT Discrete Cosine Transform .DCT Dictionary (file name extension) DCU Data-Cache Unit DD Day + Digital Display + Double Density DDA Distributed Data Access + Domain-Defined Attribute DDB Device Dependent Bitmap + Device Descriptor Block DDC Digital Data Channel [VESA] + Display Data Channel DDCMP Digital Data Communications Message Protocol [DEC] DDC1 Display Data Channel One DDCS Distributed Database Connection Services [IBM] DDD Data Definition Language + Direct Distance Dialing DDE Direct Data Entry + Dynamic Data Exchange [Microsoft] DDEML Dynamic Data Exchange Manager Library [Microsoft] DDF Display Data Channel + Dynamic Data Formatting [IBM] DDI Device Driver Interface + Digital document Interchange + Direct Dial In DDK Device Driver Kit [Microsoft Windows] DDL Data Definition Language + Data Description Language DDM Distributed Data Management DDN Defense Data Network DDNS Dynamic Domain Naming System DDP Datagram Delivery Protocol + Distributed Data Processing DDR Dynamic document Review [Symantec] DDR-SDRAM Double Data Rate-SDRAM DDS Data Description Specification + Digital Dataphone Service [AT&T] + Design Data Sheet + Digital Data Storage + Distributed Database Services DDX Digital Data Exchange DE Device End DEA Data Encryption Algorithm DEC Decrement + Device Clear + Digital Equipment Corporation DECNET Digital Equipment Corporation Networking (protocol) DEF Desk Functional Equivalent [Compaq] .DEF Definitions + Defaults (file name extensions) DEFRAG Defragment DEK Data Encryption Key DEL Delete DELSTR Delete String [REXX] .DEM Demonstration (file name extension) DEN document Enabled Networking [Novell-Xerox] DER Distinguished Encoding Rules DES Data Encryption Standard + Data Entry Sheet .DES Description (file name extension) DET Device Execute Trigger DEV Device DF Data Field + Destination Field + Device Flag + Double Flag DFC Data Flow Control DFDR Digital Flight Data Recorder DFM Design For Manufacturability [IBM] DFP Digital Flat Panel DFS Distributed File System DFSMS Data Facility Storage Management Subsystem [IBM] DFT Design For Testability + Diagnostic Function Test + Discrete Fourier Transform + Distributed Function Terminal DFU Data File Utility DGIS Direct Graphics Interface Standard DHCP Dynamic Host Configuration Protocol DHL Dynamic Head Loading .DHP Dr. Halo PIC (file name extension) DHTML Dynamic HTML DI Data In + Destination Index DIA document Interchange Architecture [IBM] DIB Device Independent Bitmap + Directory Information Base + Dual Independent Bus [Intel] DIBOL DEC Business Oriented Language .DIC Dictionary (file name extension) DID Direct Inward Dialing DIDS Distributed Intrusion Detection System DIF Data Interchange Format DIFFSENS Differential Sense DIIP Direct Interrupt Identification Port DIMM Dual In-Line Memory Module DIN Deutsche Industrie Norm (German equivalent of EIA) DIO Data Input-Output DIP Dialup Internet Protocol [Internet] + Digital Imaging Processing + Dual In-line Package + Dual In-line Pin DIR Directory (file) DIS Draft International Standard + Dynamic Impedance Stabilization [CompuCom] DISA Data Interchange Standards Association + Direct Inward System Access DISP Displacement (offset) DIT Directory Information Tree DIV Divide DIVE Direct Interface Video Extension [OS/2 Warp] DIVX Digital Video Express DIW D-Inside Wire [AT&T] .DIZ Description In Zip (file name extension) DL Download (also D/L) DL/1 Data Manipulation Language 1 [IBM] DLC Data Link Control (protocol) [IBM] + Distributed Loop Carrier DLCI Data Link Connection Identifier DLD Display List Driver DLE Data Link Escape DLL Dynamic Link Library DLM Distributed Lock Manager + Dynamic Link Module DLP Digital Light Processing [TI] DLR DOS LAN Requester DLS Data Link Switching [IBM] DLT Digital Linear Tape DM Distributed Memory DMA Direct Memory Access/Addressing + document Management Alliance DMAC DMA Controller DMACS Distributed Manufacturing Automation & Control Software DMD Digital Micromirror Device [TI] DME Direct Memory Execution + Distributed Management Environment DMF Distribution Media Format [Microsoft] DMI Desk Management Interface DML Data Manipulation Language DMM Digital Multimeter DMMS Dynamic Memory Management System DMOS Double-diffused Metal-Oxide Semiconductor DMP Dot Matrix Printer DMPC Distributed Memory Parallel Computer DMPP Distributed Memory Parallel Processor DMQS Display Mode Query and Set [IBM] DMS Data Management Software + Data/document Management System DMSD Digital Multistandard Decoding DMSS Distributed Mass Storage System DMT Digital/Discrete Multi-Tone DMTF Desk Management Task Force DMY Day Month Year DN Down DNC Direct Numerical Control DNIC Data Network Identification Code DNIS Dialed Number Identification Service DNS Domain Naming System DO Data Out + Distributed Objects .DOC document + documentation (file name extensions) DOCSV Data Over Circuit-Switched Voice DOE Distributed Objects Everywhere DOIP Dial Other Internet Providers [IBM] DO-IT Disabilities, Opportunities, Internetworking and Technology DOM document Object Model DOMF Distributed Object Management Facility DOS Disk Operating System DOSEM DOS Emulation DOV Data Over Voice DOW Day Of Week DP Data Processing DPA Demand Protocol Architecture [3Com] + document Printing Architecture DPAM Demand Priority Access Method DPAREN Data Parity Enable [IBM] DPB Drive Parameter Block DPC Direct Program Control DPI Distributed Protocol Interface + Dots Per Inch DPL Descriptor Privilege Level DPM Digital Panel Meter DPMA Data Processing Management Association DPMI DOS Protected Mode Interface [Microsoft] DPMS Display Power Management Support DPO Data Phase Optimization DPS document Processing System DPSK Differential Phase Shift Keying DPtoTP Display Coordinates to Tablet Coordinates (converting) DQDB Distributed Queue Dual Bus DQL Data Query Language DR Data Received D/R Direct or Reverse DRAM Dynamic Random Access Memory DRAW Direct Read After Write DR.BOND Dial-up Router Bandwidth On Demand [NEC] DRDA Distributed Relational Database   Algorithm/Architecture [IBM] DR-DOS Digital Research-Disk Operating System DRDW Direct Read During Write DRI Digital Research Incorporated DRM Distributed Resource Management DRO Data Request Output + Destructive Read-Out DRS document Registration System .DRS Driver Resource (file name extension) [WordPerfect] DRV Drive .DRV Device Driver (file name extension) (Also see .DVR) .DRW Draw + Drawing (file name extensions) DS Data Segment + Data Send + Data Server + Double Sided D/S Dhrystone Per Second DSA Digital Signature Algorithm + Directory System Agent DSAP Destination Service Access Point DSD Direct Stream Digital [Sony-Philips] DSDD Double Sided, Double Density (diskette) DSE Data Storage Equipment DSEA Display Station Emulation Adapter DSECT Dummy Control Section DSHD Double Sided, High Density (diskette) DSIS Distributed Support Information Standard DSL Digital Subscriber Line + Dynamic Simulation Language DSLAM Digital Subscriber Line Access Multiplexer DSM Distributed Shared Memory DSMA Digital Sense Multiple Access DSN Delivery Service Notification DSOM Distributed System Object Model DSP Digital Signal Processing/Processor + Directory Synchronization Protocol [Lotus] DSPT Display Station Pass-Thru [IBM] DSQD Double Sided, Quad Density (diskette) DSR Data Set Ready + Device Status Register + Device Status Report DSS Decision Support System + Digital Signature Standard + Direct Station Selector DSSI Digital Standard Systems Interconnect [DEC] DSSS Direct-Sequencing Spread Spectrum DSSSL document Style Semantics and Specifications Language DSTN Double Supertwisted Nematic DSU Data Service/Switching Unit + Digital Service Unit DSVD Digital Simultaneous Voice and Data DSW Data Status Word + Device Status Word DSX Digital Signals Cross-Connect D2T2 Dye Diffusion Thermal Transfer (printing) DTA Disk Transfer Area .DTA Data (file name extension) DTC Desk Conferencing DTD document Type Definition DTE Data Terminal Equipment + Dumb Terminal Emulator DTF Distributed Test Facility DTL Dialogue Tag Language [IBM] + Diode-Transistor Logic DTM Digital Terrain Mapping DTMF Data Tone Multiple Frequency + Dual Tone Multifrequency DTP Desk Publishing + Distributed Transaction Process DTR Data Terminal Ready + Data Transfer Rate DTSS Dartmouth Time Sharing System DTV Desk Video + Digital Television DTVC Desk Video Conferencing DU Disk Usage DUA Directory User Agent DUAT Direct User Access Terminal DUN Dial-Up Networking [Microsoft] DUNCE Dial Up Network Connection Enhancement DV Digital Video .DV DESQview script (file name extension) DVC Desk Video Conferencing + Digital Video Camera DVD Digital Video Disk DVD-R Digital Video Disk-Recordable DVD-RAM Digital Versatile Disc-RAM DVD-ROM Digital Versatile Disc-ROM DVE Digital Video Effect DVI Digital Video Interactive + Digital Visual Interface .DVI Device Independent (file name extension) DVM Digital Volt Meter DVMRP Distance Vector Multicast Routing Protocol [Internet] DVR Digital Video Recorder .DVR Device Driver (file name extension) (Also see .DRV) DW Data Warehousing DWDM Dense Wavelength Division Multiplexer DWG Drawing DWMT Discrete Wavelet Multitone D2X Decimal To Hexadecimal [REXX] .DXB Drawing Interchange Binary (file name extension) [AutoCAD] DXC Data Exchange Control DXF Drawing Exchange Format DXI Data Exchange Interface DYNSRC Dynamic Source E... EA Effective Address + Extended Attribute [OS/2] EAR External Access Register EARN European Academic Research Network EAROM Electrically Alterable Read Only Memory EARS Electronic Access to Reference Services + Electronic Authoring and Routing System [DEC] + Explicit Archive and Retrieval System [Langley Research] EATA Enhanced AT Bus Attachment EAX Environmental Audio Extensions [Creative] EB Exabyte (1,024 petabytes) (One Billion Billion characters of information) EBC EISA Bus Controller EBCT Electron Beam Computed Tomography EBCDIC Extended Binary Coded Decimal Interchange Code [IBM] EBI Equivalent Background Input + Extended Background Investigation EBNF Extended Backus-Naur Form EBT Electronic Benefits Transfer EC Electronic Commerce + Error Control ECAL Enjoy Computing And Learn ECAT Electronic Card Assembly and Test [IBM] ECB Electronic Codebook + Event Control Block ECC Elliptic Curve Crypto + Error Check Code + Error Checking and Correction + Error Correction Code ECD Enhanced Color Display + Enhanced Compact Disk ECHO European Commission Host Organization [Internet] ECI External Call Interface ECL Emitter Coupled Logic ECM Electronic Control Module ECMA European Computer Manufacturers Association ECNE Enterprise Certified NetWare Engineer [Novell] ECP Enhanced/Extended Capabilities Port [Microsoft] ECS Enhanced Chip Set ECTL Electronic Communal Temporal Lobe ECU EISA Configuration Utility ED Erase Display EDA Electronic Design Automation + Embedded document Architecture [Go Corporation] EDB Embedded Database EDC Electronic Digital Computer + Enhanced Data Correction + Error Detection and Correction EDDC Extended Distance Data Cable EDE Encrypt-Decrypt-Encrypt EDGAR Electronic Data Gathering, Analysis and Retrieval EDI Electronic Data Interchange + Electronic document Interchange [DEC] EDIF Electronic Design Interchange Format EDIFACT EDI for Administration Commerce and Transport EDL Edit Decision List EDLC Ethernet Data Link Control EDLIN Editor (Line Text) EDMS Electronic document Management System EDO Extended Data Out EDOS Enhanced DOS for Windows EDP Electronic Data Processing EDPM Electronic Data Processing Machine EDRAM Eraseable/Extended Dynamic Random Access Memory EDS Electronic Data Systems (corporation) EDSAC * Electronic Delay Storage Automatic Computer .EDU Educational Institutions (Domain Name) [Internet] EDVAC * Electronic Discrete Variable Automatic Computer (First stored-program digital computer) EE Extended Edition [IBM] EEC Extended Error Correction EEG Electroencephalogram EEL Epsilon Extension Language EEM Extended Memory Management EEMAC Electrical & Electronic Manufacturers of Canada EEMS Enhanced Expanded Memory Specification EEPROM Electrically Erasable Programmable Read-Only Memory EES Escrow Encryption Standard EFA Extended File Attribute EFF Electronic Frontier Foundation EFI Electromechanical Frequency Interference + Electronics For Imaging EFIGS English, French, Italian, German, Spanish EFL Emitter Follower Logic E-FORM Electronic Form EFS Encrypting File System EFTS Electronic Funds Transfer System EGA Enhanced Graphics Adapter EGP Exterior Gateway Protocol EGREP Extended Global Regular Expression Print [Unix] EHLLAPI Emulator High Level Language Application Programming Interface [IBM] EIA Electronic Industries Association EIDE Enhanced Integrated Drive Electronics EIS Executive Information System EISA Extended Industry Standard Architecture EJB Enterprise JavaBeans EL Electroluminescent (display) + Erase Line ELAN Emulated Local Area Network ELC Embedded Linking and Control ELF Executable and Linking Format + Extremely Low Frequency ELS Entry Level System EM Electronic Mail + Emphasized + End of Medium + Expanded Memory EMA Electronic Mail Association + Enterprise Management Architecture EMACS Editing Macros [Unix] E-MAIL Electronic Mail EMB Extended Memory Block [LIM/AST] EMBARC Electronic Mail Broadcast to a Roaming Computer [Motorola] EMC Electromagnetic Compatibility + Enhanced Memory Chip + E-Mail Connection + Extended Math Coprocessor EMCC * Eckert-Mauchly Computer Company (World's first computer company, founded by Presper Eckart and John Mauchly, who invented and built the first UNIVAC) EMI Electromagnetic Interference .EML Electronic Mail (file name extension) EMM Expanded Memory Manager EMR Electro-Magnetic Radiation + Enhanced Metafile Record EMS Electronic Mail System + Electronic Message Service + Expanded Memory Specification [LIM] EMSAPI Extended Messaging Services Application Programming Interface EMWAC European Microsoft Windows NT Academic Centre .ENC Encoded (file name extension) ENDEC Encoder/Decoder ENDS Ends Segment ENIAC * Electronic Numerical Integrator Analyzer and Computer (First fully electronic digital computer) ENQ Enquiry ENSS Exterior Nodal Switching Subsystem [Internet] EOA End Of Address EOB End Of Block EOC End Of Conversion EOF End Of File + Enterprise Objects Framework [Next Computer] EOI End Of Interrupt + End Or Identify EOJ End Of Job EOL End Of Line + End Of List EOM End Of Message EOR Exclusive OR (Also XOR) EOS Earth Observing System [NASA] + End Of String EOSDIS Earth Observing System Data and Information System [NASA] EOT End Of Table + End Of Tape (marker) + End Of Text + End Of Transmission EP Electrophotographic Engine EPIC Explicitly Parallel Instruction Computing EPL Effective Privilege Level EPLD Electrically Programmable Logic Device EPM Enhanced Editor for Presentation Manager [IBM] + Enterprise Process Management [IBM] EPP Enhanced Parallel Port EPROCESS Executive Process EPROM Electrically Programmable Read Only Memory + Erasable Programmable Read Only Memory .EPS Encapsulated Postscript (file name extension) EPSF Encapsulated Postscript Files ERA Extended Registry Attributes ERAS Electronic Routing and Approval System [Hughes Aircraft] ERD Emergency Repair Disk ERIC Educational Resources Information Center [Internet] ERLL Enhanced Run Length Limited ERMA * Electronic Recording Method, Accounting [General Electric] EROM Erasable Read Only Memory EROS Earth Resources Observation System [U.S. Geological Survey] ERP Enterprise Resource Planning ERR Error ER/RC Extended Result/Response Code ERU Emergency Recovery Utility [Microsoft] ES Extra Segment ESA Enterprise Systems Architecture [IBM] + European Space Agency ESC EISA System Component + Escape ESCD Extended System Configuration Data ESCM Extended Services Communications Manager [IBM] ESCON Enterprise System Connection (Architecture) [IBM] ESC/P Epson Standard Code for Printers ESD Electronic Software Distribution + Electrostatic Discharge ESDI Enhanced Small/System Device Interface ESDRAM Enhanced SDRAM ESF Extended Superframe ESI End System Identifier + Enhanced Serial Interface (specification) [Hayes] ESMR Enhanced Specialized Mobile Radio ESN Electronic Security Number ESP Emulation Sensing Processor + Encapsulating Security Payload (header) + Enhanced Serial Port [Hayes] + Enhanced Service Provider + Estimated Selling Price ESR Event Service Routine ESS Electronic Switching System ESU Electro-Static Unit ET Enhancement Technology ETACS Extended Total Access Communication System [IBM] ETANN Electrically Trainable Analog Neural Network (chip) [Intel] ETB End of Transmission Block ETC Electronic Toll Collection + Enhanced Throughput Cellular (modem protocol) [AT&T] ETF Enriched Text Format ETOM Electron-Trapping Optical Memory ETPL Endorsed Tempest Products List ETS Econometric Time Series ETX End Of Text EU Execution Unit EUC End User Computing + Extended Unix Code [IBM] EUDORA (Named after author of story: "Why I Live at the P.O.", Ms. Eudora Welty) EUI End-User Interface EVE Extensible VAX Editor EVGA Extended Video Graphics Array + Extended Video Graphics Adapter EWAN Emulator Without A Good Name [Internet] EWS Employee Written Software [IBM] ExCA Exchangeable Card Architecture [Intel] .EXE Executable (file name extension) EXE2BIN Program used to convert an (.EXE) file to binary format (.COM) file EXM Enterprise Messaging Exchange [Lotus] EXP Exponent EXT External EXTRN External Reference E-ZINE Electronic Magazine F... FAB Computer-Chip Fabrication Plant FAC File Access Code FAMOS Floating Gate Avalanche MOS FANS Future Air Navigation System FAP File Access Protocol FAPI Family Application Program Interface FAQ Frequently Asked Question FARNET Federation of American Research Networks [Internet] FASIC Function and Algorithm-Specific Integrated Circuit FAT File Allocation Table FAX Facsimile .FAX Fax (file name extension) FC/AL Fiber Channel/Arbitrated Loop FCB File Control Block FCC Federal Communications Commission FCC: File Carbon Copy FCCSET Federal Coordinating Council for Science, Engineering and Technology FC/EL Fiber Channel/Enhanced Loop FCI Flux Changes per Inch FCL Fibre Channel Loop FCR FIFO Control Register FCS Fiber Channel Standard + Frame Check Sequence FD Floppy Disk + Floppy Drive + Full Duplex FDC Floppy Disk Controller FDDI Fiber Digital Device Interface + Fiber Distributed Data Interface FDISK Fixed Disk FDM Frequency Division Multiplexing FDMA Frequency Division Multiple Access FDX Full Duplex FEC Forward Error Correction FECN Forward Explicit Congestion Notification FED Field Emission/Emitter Display FEFO First-Ended, First-Out FEP Front End Processor FEPI Front End Programming Interface FEPROM Flash EPROM FeRAM Ferroelectric RAM FESDK Far East Software Development Kit [Microsoft] FET Field Effect Transistor FF Flip-Flop + Form Feed FFDC First Failure Data Capture [IBM] FFS Fast File System FFST First Failure Support Technology [IBM] FFT Fast Fourier Transform + Final Form Text [IBM] FG Floating Gate FGREP Fixed Global Regular Expression Print [Unix] FHS Fan Heat-Sink FHSS Frequency-Hopping Spread Spectrum FIF Fractal Image Format FIFO First-In, First-Out FILO First-In, Last-Out FIP File Processor Buffering FIPS Federal Information Processing Standard FIR Fast Infrared + Finite Impulse Response .FIRM Business or Firm (Domain Name) [Internet] FIRST Forum of Incident Response and Security Teams FIU Fingerprint Identification Unit [Sony] FIX Federal Internet Exchange FLA Four Letter Acronym FLC Ferro-electric Liquid Crystal FLD Field FLL FoxPro Link Library [Microsoft Fox Pro] FLOPS Floating Point Operations Per Second .FLR Folder (file name extension) FMS Forms Management System FMT Format FMV Full Motion Video FNT Font FOCUS Forum of Control Data Users FOD Fax On Demand FOG First Osborne Group FOIP Fax Over Internet Protocol FOIRL Fiber Optic Inter Repeater Link [IEEE] FOLDOC Free On-Line Dictionary Of Computing .FON Font + Phone + Phone Directory (all file name extensions) .FOR Fortran source code (file name extension) FORTH (Programming Language)(See HLL) FORTRAN Formula Translator (Programming Language)(See HLL) FOSE Federal Office Systems Exposition FOSI Format Option Specification Instance FOSSIL Fido/Opus/Seadog Standard Interface Layer FPC Floating Point Calculation FPCE Floating-Point C Extension (specification) FPGA Field Programmable Gate-Array FPLA Field Programmable Logic-Array FPM Fast Page Mode FPP Fixed Path Protocol + Floating Point Processor FPR Floating-Point Register FPS Favorite Picture Selection + Frames Per Second FPT Forced Perfect Termination FPU Floating Point Unit FQDN Fully Qualified Domain Name [Internet] FRAD Frame Relay Access Device + Frame Relay Assembler/Disassembler FRAG Fragment + Fragmentation FRAM Ferroelectric Random-Access Memory FRC Functional Redundancy Checking FRED Frame Editor + Front-End to Dish FRPI Flux Reversals Per Inch .FRS WordPerfect Graphics Driver (file name extension) FS File Separator FSB Front Side Bus FSD File System Driver [OS/2] FSE Full Screen Editor FSF Free Software Foundation [Internet] FSK Frequency Shift Keying FSN Full Service Network FSP File Service Protocol FSR Free System Resources FST Flat Square Tube (monitor) F/T Full Time FTAM File Transfer, Access and Management + File Transfer and Access Method FTL Flash Transition Layer [Intel] FTM Flat Tension Mask [Zenith] FTP File Transfer Protocol [Internet] FTPD File Transfer Protocol Daemon FTTC Fiber To The Curb FTS Federal Telecommunication System FTX Fault Tolerant Unix FUI File Update Information FUNC Function FVT Full Video Translation FYI For Your Information G... GA General Availability GAAP Generally Accepted Accounting Principles GAL Generic Array Logic GAPI Gateway Application Programming Interface GART Graphics Address Relocation Table GATT Graphics Address Translation Table Gb Gigabit (1,024 megabits) + (One Billion Bits of Information) GB Gigabyte (1,024 megabytes) + (One Billion Characters of Information) GCC GNU C-Compiler [Unix] GCCD Glass-Passivated Ceramic Chip Diode GCR Group Code Recording GDA Global Data Area GDDM Graphics Data Display Manager GDG Generation Data Group [IBM] GDI Graphical Device Interface GDLC Generic Data Link Control [IBM] GDP Graphic Draw Primitive GDT Geometric Dimensioning and Tolerancing + Global Descriptor Table + Graphics Development Toolkit GECOS General Electric Comprehensive Operating System GEIS General Electric Information Service (company) GEM Graphics Environment Manager (DRI Program) GENIE General Electric Network for Information Exchange GEO Geostationary Earth Orbit GEOS Graphic Environment Operating System [Geoworks] GET Get Execute Trigger GFI General Format Identifier + Ground-Fault Interceptor GGP Gateway-Gateway Protocol [Internet] GHZ Gigahertz .GID ics (file name extension) [Microsoft] .GIF Graphics Interchange Format (file name extension) GIGO Garbage In, Garbage Out GII Global Information Infrastructure GILS Government Information Locator Service GIMPS Great Internet Mersenne Prime Search GINA Graphical Identification and Authentication GIS Geographic Information System + Global Information Solutions [AT&T] GIX Global Internet Exchange [Internet] GKS Graphical Kernel System GL Graphics Language G/L General Ledger GLIS Global Land Information System [US Geological Survey] GLM General Linear Models GLOBE Global Learning by Observations to Benefit the Environment [Internet] .GLY Glossary (file name extension) [Microsoft Word] GML Generalized Markup Language GMP Global Mobile Professional GMR Giant Magneto-Resistive (read head technology) GMS Global Management System + Global Messaging Service [Novell] GMT Greenwich Mean Time GND Ground (signal/system) GNN Global Network Navigator GNU Gnu's Not Unix (operating system) GNOME GNU Network Object Model Environment GOSIP Government Open Systems Interconnection Profile .GOV Governmental (Domain Name) [Internet] GP Gas Plasma + General Purpose GPF General Protection Fault GPI Graphics Programming Interface GPIB General Purpose Information/Interface Bus GPR General Purpose Register [IBM] GPRC Glass Passivated Rectifier Chip GPS Global Positioning Satellite/System + Global Product Specification GPSS * General Purpose Systems Simulator (language) GPU Graphics Processing Unit GRADD Graphics Adapter Device Driver [IBM] GRE Graphics Engine GREP Global Regular Expression Print .GRF Graph (file name extension) .GRP Group (file name extension) GS Group Separator GSI General Server Interface GSM Global Shared Memory + Global System for Mobile-Communications (network) GSNW Gateway Service for NetWare [Microsoft] GSP Generic Server Passer + Global Service Provider GSTN General Switched Telephone Network GTE General Telephone Electronics (corporation) GTF Generalized Timing Format GTL Gunning Transceiver Logic GTO Guide To Operations [IBM] GTP * Geometry Theorem Prover GUI Graphical User Interface GUID Globally Unique Identifier + Global Universal Identifier GVT Global Virtual Time GW-BASIC Gee Whiz BASIC .gz Compressed file (compressed filename extension - using GNU gzip compression/decompression program) [Unix] GZIP GNU Zip H... .H Header (file name extension) [C] HACMP High Availability Cluster Multi-Processing [IBM] HAL Hard Array Logic + Hardware Abstraction Layer + House-Programmed Array Logic HAL * Heuristically Programmed Algorithmic (computer) [from 1968 movie "2001: A Space Odyssey"] HAP Host Access Protocol HASP Houston Automatic Spooling Priority (System) HBA Host Bus Adapter HCL Hardware Compatibility List HCSS High Capacity Storage System HCU Home Computer User HD Hard Disk + High Density HDA Head Disk Assembly HDCD High Definition Compatible Digital HDF Hierarchical Data Format [NCSA] HDI Head to Disk Interference HDL Hardware Description Language HDLC High-Level Data Link Control HDM Hardware Device Module HDML Handheld Device Markup Language HDR Header HDSC High Density Signal Carrier [DEC] HDSL High-Data-Rate Digital Subscriber Line HDSS Holographic Data Storage System HDT Host Digital Terminal HDTV High Definition Television HDVD High Definition Volumetric Display HDW Hardware HDX Half Duplex HERC Hercules HEX Hexadecimal HFC Hybrid Fiber-Coaxial HFS Hierarchical File System [Macintosh] HFT High Function Terminal [IBM] HGA Hercules Graphics Adapter HGCP Hercules Graphics Card Plus HH Hour HIF Hyper-G Interchange Format HIFD High-Density Floppy Disk HIL Human Interface Link [HP] HIMEM High Memory HIPPI High Performance Parallel Interface HLCO High Low Close Open HLL High Level Language HLLAPI High Level Language Application Programming Interface .HLP Help (file name extension) HLQ High Level Qualifier HLS Hue, Luminance, Saturation (color model) HLT Halt HMA High Memory Area [Microsoft] + Hub Management Architecture HMD Head Mounted Display HMM Hidden Markov Model HMMP Hyper-Media Management Protocol HMOS High Density Metal Oxide Semiconductor + High Speed Metal Oxide Semiconductor HMP Host Monitoring Protocol HOTT Hot Off The Tree (electronic newsletter) HOV High Occupancy Vehicle HP Hewlett-Packard (Company) HPC Handheld Personal Computer HPCC High Performance Computing and Communications HPDJ Hewlett-Packard Desk Jet HPFS High-Performance File System HPG Hewlett-Packard Graphics HPGL Hewlett-Packard Graphics Language HPIB Hewlett-Packard Interface Bus HPLJ Hewlett-Packard Laser Jet HPOM Home Page Objects Model [Microsoft] HPPA Hewlett-Packard Precision Architecture HPPI High Performance Parallel Interface HPR High Performance Routing [IBM] HPSB High Performance Serial Bus HPUX Hewlett-Packard Unix HPW High Performance Workstation [Sun] .HQX BinHex (file name extension) [Macintosh] HRIS Human Resource Information System HRG High Resolution Graphics HRMS Human Resource Management System HRTF Head Related Transfer Function HS High Speed HSB Hue, Saturation, Brightness (color model) HSC Hierarchical Storage Controller + High Speed Channel HSI Hue, Saturation, Intensity HSM Hierarchical Storage Management HSP High Speed Printer/Processor HSSI High Speed Serial Interface HST High Speed Technology [U.S. Robotics] .HST History + Host (file name extensions) HSV Hue Saturation value HTML HyperText Markup Language HTTP HyperText Transfer Protocol HTTP-NG HTTP Next Generation HTTPS HyperText Transfer Protocol Secure HUD Heads Up Display HUT Hopkins Ultraviolet Telescope H/V Horizontal/Vertical HVP Horizontal & Vertical Position H/W Hardware HWCP Hardware Code Page HWD Height-Width-Depth .HYP Hyphenation (file name extension) HYTELNET Hypertext-browser for Telnet Accessible Sites Hz Hertz I... IAB Internet Architecture Board IAC Inter-Application Communication [Macintosh] IAG Instruction Address Generation IAK Internet Access Kit [IBM] IAL * International Algebraic Language (ALGOL was first called IAL) IANA Internet Assigned Numbers Authority IAP Internet Access Provider IAS Internet Access Server IAT Import Address Table IAUP Internet User Account Provider IBC Instrument Bus Computer iBCS Intel Binary Compatibility Specification IBIP Information Based Indicia Program [U.S. Postal Service] IBM International Business Machines (Corporation) IBM-GL IBM Graphics Language IC Input Circuit + Integrated Circuit + Interrupt Controller ICA Intelligent Console Architecture + Intra-application Communications Area ICAP Internet Calendar Access Protocol [Lotus] ICAS Intel Communicating Applications Specifications ICB Internet Citizen's Band ICCP Institute for the Certification of Computing Professionals ICD International Code Designator ICE In-Circuit Emulator [Intel] + Integrated Computing Environment [Langley Research] ICES Interference-Causing Equipment Standard ICI Image Component Information ICL Interface Clear ICLID Incoming-Call Line Identification ICM Image Color Matching [Kodak] + Incoming Message ICMP Internet Control Message Protocol [Novell] .ICO Icon (file name extension) iCOMP Intel Comparative Microprocessor Performance [Intel] ICP Image Coprocessor + Integrated Channel Processor ICQ I Seek You (messaging program0 ICR Intelligent Character Recognition ICS Intuitive Command Structure ICSAPI Internet Connection Services API ICU Instruction-Cache Unit + Intel Configuration Utility [Microsoft] + ISA Configuration Utility ID Identification + Identifier IDA Integrated Digital Access + Intelligent Disk Array + Intelligent Drive Array IDAPI Integrated Database Application Programming Interface IDC Integrated Database Connector + Integrated Desk Connector + Internet Database Connector [Microsoft] IDDE Integrated Development & Debugging Environment [Symantec] IDE Imbedded Drive Electronics + Integrated Development Environment [Borland] + Integrated Drive Electronics + Intelligent Drive Electronics + Interactive Design and Engineering + Interface Design Enhancement IDEA International Data Encryption Algorithm IDF Intermediate Distribution Frame IDI Initial Domain Identifier IDIV Integer Divide IDL Interactive Data Language + Interface Definition Language IDM Integrated document Management IDMS Integrated Data Base Management System IDNX Integrated Digital Network Exchange [IBM] IDP Integrated Data Processing IDR Intelligent document Recognition IDT Interface Design Tool + Interrupt Descriptor Table .IDX Index (file name extension) IE Internet Explorer [Microsoft] IEC International Electrotechnical Commission IEEE Institute of Electrical and Electronics Engineers IEF Information Engineering Facility IEMSI Interactive Electronic Mail Standard Identification IEN Internet Engineering Notes IETF Internet Engineering Task Force IESG Internet Engineering Steering Group I/F Interface IFC Internet Foundation Classes IFD Image File Directory IFF Interchangeable File Format [Amiga] IFG Incoming Fax Gateway IFP Instruction Fetch Pipeline IFS Installable File System IFSM Information Systems Management IGA Integrated Graphics Array IGC Integrated Graphics Controller IGES Initial Graphics Exchange Standard IGFET Insulated-Gate Field Effect Transistor IGMP Internet Group Multicast Protocol IGP Interior Gateway Protocol IGRP Interior Gateway Routing Protocol [Cisco] IGS Internet Go Server IHD Integrated Help Desk [IBM] IHV Independent Hardware Vendor IIF Immediate Interface III Interstate Identification Index [NCIC] IIOP Internet Inter-ORB Protocol IIR Immediate Impulse Response IIS Internet Information Server [Microsoft] IITF Information Infrastructure Task Force IKP Internet Keyed Payments [IBM] ILA Image Light Amplifier ILE Integrated Language Environment [IBM] ILP Instruction-Level Parallelism ILS International Language Support iMAC Internet Macintosh [Apple] IMACS Image Management and Communication System IMAP Internet Message Access Protocol IMAX Maximum Image IMDS Image Data Stream (format) [IBM] IME Input Method Editor IMG Image IML Initial Microcode Load [IBM] IMP Information/Interface Message Processor IMPA Intelligent Multi-Port Adapter [DCA] IMR Internet Monthly Report IMS Information Management System + Intermediate Maintenance Standards IMSP Internet Message Support Protocol IMTC International Multimedia Teleconferencing Consortium IMTV Interactive Multimedia Television IMUL Integer Multiply IMUX Inverse Multiplexer IN Input INC Increment .IND Index (file name extension) .INF Information (file name extension) .INFO Information Services (Domain Name) [Internet] INFS Internet Network File System .INI Initialize (file name extension) INIT Initialization + Initialize INM Integrated Network Management INND Internet News Daemon INS Input String + Integrated Network Server INT Integer + Internal + Interrupt + International (organization Domain name) [Internet] INTA Interrupt Acknowledge InterNIC Internet Network Information Center INTO Interrupt if Overflow occurs I2O Intelligent Input/Output I/O Input/Output IOC Inter-Office Channel IOCC Input/Output Channel Converter + Input/Output Controller Chip IOCS Input/Output Control System IOCTL Input/Output Control IODE Integrated Development and Debugging Environment [Symantec] IOP Input/Output Processor IOPL Input/Output Privilege Level IOR Interoperable Object Reference IOSGA Input/Output Support Gate Array IP Instruction Pointer + Intellectual Property +   Internet Protocol IPBF Installed Peripheral Base Flexibility IPC Instructions Per Clock + Interprocess Communication IPCP Internet Protocol Control Protocol IPCS Integrated PC Server IPDS IBM Personal Dictation System [IBM] + Intelligent Printer Data Stream [IBM] IPFC Information Presentation Facility Compiler [IBM] IPI Intelligent Peripheral Interface IPL Initial Program Load/Loader + Ion Projection Lithography IPL * Information Programming Language IPM Images Per Minute + Interpersonal Message IPMI Intelligent Platform Management Interface IPng Internet Protocol, next generation IPP Internet Printing Protocol IPSE Integrated Project Support Environment IPTC International Press Telecommunications Council IPX Internetwork Packet Exchange [Novell] IQL Interactive Query Language IR Infrared IRC Internet Relay Chat IRD Integrated Receiver/Descrambler IRDA Infrared Data Association IRDS Information Resource Dictionary System IRET Interrupt Return IRF Intermediate Routing Function + Inheritance Rights Filter [Novell] IRL Interactive Reader Language + Inter-Repeater Link IRLAP Infrared Link Access Protocol IRLED Infrared Light Emitting Diode IRM Information Resource Management + Inherent Rights Mask IRQ Interrupt Request IRTF Internet Research Task Force IRX Information Retrieval Experiment IS Information System + Interrupt Status ISA Industry Standard Architecture + Instruction-Set Architecture ISAM Indexed Sequential-Access Management/Method ISAPI Internet Server API [Microsoft] ISBN International Standard Book Number ISC Instruction Set Computer + Inter-Systems Communication [IBM] ISD Image Section Descriptor + Instructional Systems Design ISDN Integrated Services Digital Network ISH Information Super Highway ISI Internally Specified Index ISIS Integrated Systems and Information Services ISKM Internet Starter Kit for the Macintosh ISL Interactive System Language ISM Integrated Services Model [IETF] + Internet Service Manager [Microsoft] ISMF Interactive Storage Management Facility ISOC Internet Society ISO International Organization for Standardization ISP Internet Service Provider + Interrupt Stack Pointer + Interrupt Status Port ISPF Interactive System Programming Facility ISR Information Storage and Retrieval + Interrupt Service Routine + Interrupt Status Register ISSN International Standard Serial Number ISV Independent Software Vendor IT Information Technology ITB Information Technology Branch + Intermediate Text Block ITC International Typeface Corporation ITE Information Technology Equipment ITF Interactive Test Facility ITN Identification Tasking and Networking ITR Internet Talk Radio ITU International Telecommunication Union ITUG International Telecommunications User Group ITU-TIES ITU-Telecom Information Exchange Services ITU-TSS ITU-Telecommunication Standards Section ITV Interactive Television ITX Intermediate Text Block IU Integer Unit IUAP Internet User Account Provider IUS/ITB Interchange Unit Separator/Intermediate Transmission Block IVDS Integrated Voice and Data Systems IVIS Interactive Video Information System IVL Independent Vendor League + Intel Verification Lab IVR Interactive Voice Response IVS Interactive Videodisk System IVT Interrupt Vector Table IV&V Independent Verification & Validation I-WAY Information Highway IXC Interexchange Carrier J... JA Jump Address + Jump if Above JAD Joint Application Design JAE Jump if Above or Equal JANET Joint Academic Network JAR Java Archive (file format) JBE Jump if Below or Equal JC Jump if Carry set JCL Job Control Language JDBC Java Database Connectivity JDK Java Development Kit JE Jump if Equal JEDEC Joint Electronic Devices Engineering Council JEIDA Japanese Electronics Industry Development Association JEPI Joint Electronic Payment Initiative JES Job Entry System JFC Java Foundation Classes JFET Junction Field Effect Transistor JFIF JPEG File Interchange Format JFS Journaled File System [IBM] JG Jump if Greater JGE Jump if Greater or Equal JIPS JANET Internet Protocol Service JIT Just-In-Time (compiler) JL Jump if Less JLE Jump if Less than or Equal to JLIP Joint Level Interface Protocol JMAPI Java Management Application Program Interface JMF Java Media Framework [Sun] JMP Jump JMS Java Message Service JNA Jump if Not Above JNAE Jump if Not Above or Equal JNB Jump if Not Below JNBE Jump if Not Below or Equal JNG Jump if Not Greater JNGE Jump if Not Greater or Equal JNI Java Native Interface .JNK Junk (file name extension) JNLE Jump if Not Less or Equal JNO Jump if No Overflow JNP Jump if No Parity JNS Jump if No Sign JOE Java Objects Everywhere JOHNNIAC* John Neumann Integrator and Automatic Computer [Rand Corp.] JOSS * Johnniac Open Shop System [Rand Corp.] JPE Jump if Parity Even JPEG Joint Photographic Experts Group JPL Jet Propulsion Laboratory JPO Jump if Parity Odd JRE Java Runtime Environment JS Jump if Sign JTAPI Java Telephony Application Programming Interface JZ Jump if Zero JNZ Jump if Not Zero JSS Java-script Style Sheet JUGHEAD Jonzy's Universal Gopher Hierarchy Excavation and Display [Internet] JVM Java Virtual Machine K... K-12 Kindergarten through 12th Grade [US Education System] KAM Keep Alive Memory Kb Kilobit KB Keyboard + Kilobyte (1,024 bytes) KBD Keyboard (also KEYB) KBD$ Keyboard [OS/2] KBE Knowledge Based Engineering Kbps Kilobits Per Second KBps Kilobytes Per Second KDT Key Definition Table KEFIR Key Findings Reporter [GTE] KEYBBE Foreign language KEYBoard program - Belgium KEYBBR Foreign language KEYBoard program - Brazil KEYBCF Foreign language KEYBoard program - Canadian-French KEYBCZ Foreign language KEYBoard program - Czechoslovakia (Czech) KEYBDK Foreign language KEYBoard program - Denmark KEYBFR Foreign language KEYBoard program - France KEYBGR Foreign language KEYBoard program - Germany KEYBHU Foreign language KEYBoard program - Hungary KEYBIT Foreign language KEYBoard program - Italy KEYBLA Foreign language KEYBoard program - Latin America KEYBNL Foreign language KEYBoard program - Netherlands KEYBNO Foreign language KEYBoard program - Norway KEYBPL Foreign language KEYBoard program - Poland KEYBPO Foreign language KEYBoard program - Portugal KEYBSF Foreign language KEYBoard program - Swiss-French KEYBSG Foreign language KEYBoard program - Swiss-German KEYBSL Foreign language KEYBoard program - Czechoslovakia (Slovak) KEYBSP Foreign language KEYBoard program - Spain KEYBSU Foreign language KEYBoard program - Finland KEYBSV Foreign language KEYBoard program - Sweden KEYBUK Foreign language KEYBoard program - United Kingdom KEYBUS Foreign language KEYBoard program - United States KEYBYU Foreign language KEYBoard program - Yugoslavia KHz Kilohertz KIF Knowledge Interchange Format KIS Knowbot Information Service [Internet] KPI Kernel Programming Interface KQML Knowledge Query and Manipulation Language KSH Korn Shell (program) [Unix] KSPH Keystrokes Per Hour KSR Keyboard Send Receive KRS Knowledge Retrieval System

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L2F Layer Two Forwarding [Cisco] L2TP Layer Two Tunneling Protocol LADDR Layered Device Driver Architecture [Microsoft] LALL Longest Allowed Lobe Length LAN Local Area Network LANACS Local Area Network Asynchronous Connection Server LANDP LAN Distributed Platform LANE Local Area Network Emulation LANG Language LAPB Link Access Procedure Balanced (protocol) LAPD Link Access Procedure on the D-Channel (protocol) LAPM Link Access Procedure for Modems LAR Load Access Rights LASER Light Amplification by Stimulated Emission of Radiation LASTport Local Area Storage Transport (protocol) [DEC] LAT Local Access Terminal + Local Area Transport [DEC] LATA Local Access and Transport Area LAVC Local Area VAX Cluster LAWN Local Area Wireless Network LB Left Button (of 2 or 3 button Mouse) LBA Logical Block Addressing LBL Label LBR Librarian .LBR Library (file name extension) LBT Listen Before Talk LBX Local Bus Accelerator LCA Lotus Communications Architecture [Lotus] LCC Leadless Chip Carrier LCD Liquid Crystal Display + Lowest Common Denominator LCF Low Cost Fiber LCK Library Construction Kit [Microsoft FoxPro] LCP Link Control Protocol LCR Least Cost Routing + Line Control Register LCSD Laminate Chip Signal Diode LCU Last Cluster Used LDA Logical Device Address LDAP Lightweight Directory Access Protocol [IBM] LDC Lotus Development Corporation LDDS Long Distance Discount Services (company) LDM Long Distance Modem LDT Local Descriptor Table LE Less or Equal LEA Load Effective Address LEAF Law Enforcement Access Field LEC Local Area Network Emulation Client + Local Exchange Carrier LED Light Emitting Diode LEL Link, Embed and Launch-to-edit [Lotus] LEM Language Extension Module LEN Low Entry Networking LEO Low Earth Orbit LES Local Area Network Emulation Server .LET Letter (file name extension) LEX Lexicon LF Line Feed LFAP Lightweight Flow Admission Protocol LFI Last File Indicator LFN Long File Name LFT Low Function Terminal [IBM] LFU Least Frequently Used LGA Leadless Grid Array LGDT Load Global Descriptor Table LIAS Library Information Access System .LIB Library (file name extension) LIC Line Interface Coupler [IBM] LICS Lotus International Character Set [LDC] LIDT Load Interrupt Descriptor Table LIEP Large Internet Exchange Packet [Novell] LIF Low Insertion Force LIFO Last In, First Out LILO Last In, Last Out LIM Lotus/Intel/Microsoft LIMA Lotus/Intel/Microsoft/AST LIMDO Light Intensity Modulation Direct Overwrite LIMM Light Intensity Modulation Method LIMS Library Information Management System LINUX (Operating system named after Linus Torvalds) LIP Large Internet Packet LIPS Lightweight Internet Person Schema + Logical Inferences Per Second LISP List Processing (Language)(See HLL) LISTSERV List Server [Internet] LIU LAN Interface Unit LIW Long Instruction Word LLC Logical Link Control LLDT Load Local Descriptor Table LLF Low Level Format LMB Left Mouse Button LMBCS Lotus Multi-Byte Character Set [Lotus] LMD Last Modification Date LMDS Local Multipoint Distribution Service LMI Link/Local Management Interface LMS Lotus Messaging Switch [Lotus] LMSW Load Machine Status Word LMU LAN Management Utilities [IBM] + LAN Manager for Unix LN Load Number + Logarithm (Natural) LN:DI Lotus Notes:document Imaging LNK Link LOB Line of Business LOC Lines Of Code + Loop On-Line Control LOCIS Library of Congress Information System LOD Level Of Detail LODSB Load String Byte LOG Logarithm (Base 10) LOGO (Programming Language)(See HLL) LON Local Operating Network LOOPE Loop while Equal LOOPNE Loop while Not Equal LOOPNZ Loop while Not Zero LOOPZ Loop while Zero LORE Line Oriented Editor LPAR Logic Programming and Automated Reasoning LPC Local Procedure Call LPD Line Printer Daemon (protocol) [Berkley] LPI Lines Per Inch LPL Lotus Programming Language [Lotus 1-2-3] [LDC] LPM Lines Per Minute LPN Logical Page Number LPR Line Printer Remote LPS Low-Power Schottky LPT Line Printer LPT1 First Parallel Printer Port LPT2 Second Parallel Printer Port LPT3 Third Parallel Printer Port LQ Letter Quality LQM Link Quality Monitoring (protocol) LR Link Register LRC Local Register Cache + Longitudinal Redundancy Check LRL Least Recently Loaded LRM Language Reference Manual + Least Recently-Used Master .LRS Language Resource (file name extension) [WordPerfect] LRU Least Recently Used LSA LAN and SCSI Adapter [IBM] + Line Sharing Adapter + Local Security Authority [Microsoft] LSAPI License Services Application Program Interface LSB Least Significant Bit LSC Least Significant Character LSD Least Significant Digit LSI Large Scale Integration LSL Link Support Layer + Load Segment Limit LST List .LST List (file name extension) LTO Linear Tape Open LTR Left-To-Right + Letter + Load Task Register LU Logical Unit (Also LUN) LUA Logical Unit Application (interface) LUI Local User Input LUIS Library User Information Service LUN Logical Unit Number LUT Lookup Table LV Logical Volume [IBM] LVDS Low-Voltage Differential Signaling LVM Logical Volume Management [IBM] LW Lazy Write .LYR Lyrics (music file name extension) LZW Lempel-Ziv-Welch (algorithm) M... mA Milliampere MAC Macintosh (Apple Macintosh Computer) + Media/Medium Access Control + Message Authentication Code MAC * Multiple Access Computers .MAC MacPaint (file name extension) + Macro (file name extension) MACH Multilayer Actuator Head [Epson] MADE Manufacturing and Automated Design Engineering MADYMO Mathematical Dynamic Modeling [TNO] MAE Merit Access Exchange + Metropolitan Area Ethernet MAGMA Minimal Architecture for Generalized Markup Applications mAh Milliampere-Hour MAI Multiple Applications Interface .MAI Mail (file name extension) MAJC Microprocessor Architecture for Java Computing [Sun] MAN Manual [Unix] + Metropolitan Area Network MANIAC * Mathematical Analyzer Numerical Integrator and Computer MANPAGE Manual Page [Unix] MAP Maintenance Analysis Procedures + Manufacturing Automation Protocol + Memory Allocation Map .MAP Linker Map (file name extension) MAPI Mail/Messaging Applications Programming Interface [Microsoft] MAPICS Manufacturing, Accounting and Production Information Control System [IBM] MARC Machine Readable Cataloging + Multi-Technology Automated Reader Card MARVEL Machine-Assisted Realization of the Virtual Electronic Library [Library of Congress] MASM Macro Assembler [Microsoft] MASS Maximum Availability and Support Subsystem [Parallan] MAT Maintenance Access Terminal MAU Media Access/Adapter Unit + Multistation Access Unit MAVDM Multiple Application VDM MAX Maximum MB Megabyte (1,024 kilobytes) + Middle Button (of 3 button Mouse) MBASIC Microsoft BASIC [Microsoft] MBCS Multi-Byte Character Set [IBM] MBONE Multicast Backbone [Internet] MBps Megabytes Per Second Mbps Megabits Per Second MBR Master Boot Record MBX Mailbox MCA Micro Channel Adapter/Architecture [IBM] MCAD Mechanical Computer Aided Design MCB Memory Control Block MCF Meta Content Framework MCGA Multicolor Graphics Array MCI MCI Communications Corp. (name from initials of original company - Microwave Communications, Inc.) + Media Control Interface [Microsoft] MCL Microsoft Compatibility Labs [Microsoft] MCM Multi-Chip Module MCNE Master Certified Novell Engineer [Novell] MC-PGA Metallized Ceramic - Pin Grid Array MCPS Microsoft Certified Product Specialist [Microsoft] MC-QFP Metallized Ceramic - Quad Flat Pack MCR Modem Control Register MCSD Microsoft Certified Systems Developer [Microsoft] MCSE Microsoft Certified Systems Engineer [Microsoft] MCU Microcontroller Unit + Multi-Chip Unit [DEC] + Multipoint Control Unit MD Make Directory + Mini Disk [Sony] + Monochrome Display MDA Monochrome Display Adapter + Multidimensional Analysis MDDBMS Multidimensional Data Base Management System .MDF Menu Definition File (file name extension) MDI Memory Display Interface + Multiple document Interface MDIC Manchester Decoder and Interface Chip [AT&T] MDK Multimedia Developers Kit [Microsoft] MDLP Mobile Data Link Protocol MDR Minimum Design Requirement MDY Month Day Year .ME Opening Information (file name extension) (As in READ.ME) MEB Memory Expansion Board MEG Megabyte MEM Memory .MEN Menu (file name extension) MERCI Multimedia European Research Conferencing Integration MES Manufacturing Execution System MESI Modified, Exclusive, Shared and Invalid (protocol) MET Memory Enhancement Technology [Hewlett-Packard] .MET Metafile (file name extension) MFC Microsoft Foundation Class [Microsoft] MFFS Microsoft Flash File System [Microsoft] MFI Multifunction Interpreter MFIOP Multifunction I/O Processor MFLOPS Million Floating Point Operations Per Second MFM Modified Frequency Modulation MFP Multi-Function Peripheral/Product MFPI Multifunction Peripheral Interface MFS Macintosh File System [Macintosh] + Magnetic Tape Field Search + Memory File System Modified Filing System [Revelation Technologies] MFT Master File Table + Multiprogramming with a Fixed number of Tasks MGA Monochrome Graphics Adapter MGCP Media Gateway Control Protocol MGE Modular GIS Environment MGET Multiple Get [Unix] MGML Minimal Generalized Markup Language MGR Manager MHS Message Handling Service + Message Handling System MHz Megahertz MI Management Interface MIB Management Information Base MIC Message Integrity Check MICR Magnetic Ink Character Recognition MICRO One-millionth MICS Macro Interpretive Commands MIDI Musical Instrument Digital Interface MIF Management Information Format .MIF Management Information Files (file name extension) MIG Metal In Gap MII Microsoft/IBM/Intel MIL Machine Interface Layer [Go Corporation] + .MIL Military (Domain name) [Internet] MIM Map Image Metafile + Metal-Insulator-Metal (screen) MIMD Multiple Instruction Multiple Data Stream (processor) MIME Multipurpose Internet Mail Extension [Internet] MI/MIC Mode Indicate/Mode Indicate Common MIN Minimum + Mobile Identification Number MIND Microsoft Internet Developer [Microsoft] MINUET Minnesota Internet Users Essential Tools [Internet] MIPS Million Instructions Per Second MIS Management Information System + Multimedia Information Sources [Internet] MISC Miscellaneous MIX Member Information Exchange MKDIR Make Directory ML Machine Language + Meta Language MLAPI Multilingual Application Programming Interface MLC Multilayer Ceramic + Multilevel Cell (program) [Internet] MLE Multi-Line Editor MLID Multi-Link Interface Driver MLM Mailing List Manager [Internet] MLPPP Multilink PPP MM Minutes + Month MMA Microcomputer Managers Association MMC Matched Memory Cycle + Microcomputer Marketing Council + Microsoft Management Console [Microsoft] MMCD MultiMedia Compact Disk MMCX Multimedia Communication Exchange [Lucent Technologies] MMI Man-Machine Interface MMIS Materials Manager Information System MMPM Multi Media Presentation Manager MMU Memory Management Unit MMVF Multimedia Video File [NEC] MMX Matrix Manipulation Extensions [Intel] + Multimedia Extensions MNOS Metal Nitride Oxide Semiconductor MNP Microcom Networking Protocol [Microcom] .MNU Menu (fine name extension) MO Magneto-Optical (disk drive) MOB Memory-Order Buffer MOBO Mother Board MOD Module + Modulus MODEM Modulator Demodulator MOHLL Machine Oriented High Level Language MOLAP Multidimensional On-Line Analytical Processing MOM Manufacturing Operations Management + Message-Oriented Middleware + Microsoft Office Manager [Microsoft] MONET Multiwavelength Optical Networking MONO Monaural MOO MUD, Object Oriented [Internet] MOP Maintenance Operations Protocol MOPS Million Operations Per Second MOS Magneto-Optic Storage + Mean Opinion Score + Metal Oxide Semiconductor MOSFET Metal Oxide Semiconductor Field Effect Transistor MOTD Message Of The Day MOV Metal Oxide Varistor + Move MOVS Move String MP Massively Parallel (processing) + Multiple Processors MP3 MPEG Audio Layer 3 MPC Multimedia Personal Computer + Multipath Channel MPCS Mission Planning and Control Station (Software) MPE Multiple Programming Executive [HP] MPEG Moving Picture Experts Group MPI Message Passing Interface + Multiprecision Integer MPM Message Passing Library [IBM] MPMD Multiple Processor/Multiple Data MPOA Multi-Protocol over Asynchronous-Transfer-Mode MPP Massively Parallel Processing + Message Posting Protocol + Message Processing Program MPQP Multi-Protocol Quad Port [IBM] MPR Multipart Repeater + Multi Protocol Router [Novell] MPS Multiprocessor Specification MPTN Multi-Protocol Transport Network MPTS Multi-Protocol Transport Services MPU Microprocessor Unit MQI Messaging and Queuing Interface [IBM] MR Magneto Resistive + Modem Ready MRCF Microsoft Realtime Compression Format MRCI Microsoft Realtime Compression Interface MRI Magnetic Resonance Imaging MRM Most Recently-Used Master MRO Multi-Region Operation MRP Materials Requirement Planning MRPL Main Ring Path Length MRS Media Recognition System MRT Mean Repair Time MRU Maximum Receive Unit MS Memory System + Message Store + Microsecond + Microsoft Corporation + Millisecond MSACM Microsoft Audio Compression Manager [Microsoft] MSAU Multi-Station Access Unit MSAV Microsoft Anti Virus [Microsoft] MSB Most Significant Bit MSBF Mean Swaps Between Failures MSCDEX Microsoft Compact Disc Extensions [Microsoft] MSCHAP Microsoft Challenge Handshake Authentication Protocol [Microsoft] MSD Mass Storage Device + Most Significant Digit + Microsoft System Diagnostics [Microsoft] MSDE Microsoft Data Engine MSDN Microsoft Developer Network [Microsoft] MS-DOS Microsoft - Disk Operating System [Microsoft] MSDR Multiplexed Streaming Data Request MSDS Microsoft Developer Support [Microsoft] MSFR Minimum Security Function Requirements [IBM] MSG Message .MSG Program Message (file name extension) MSI Medium Scale Integration MSIE Microsoft Internet Explorer [Microsoft] MSL Map Specification Library + Mirrored Server Link MSMQ Microsoft Message Queue-Server [Microsoft] MSN Microsoft Network [Microsoft] MSO Multiple-Systems Operator .MSP Microsoft Paint (file name extension) [Microsoft] MSRP Manufacturer Suggested Retail Price MSS Mass Storage System + Multiprotocol Switched Services [IBM] MSTS Microsoft Terminal Server [Microsoft] MSW Machine Status Word MTA Message Transfer Agent + Multiple Terminal Access MTBB Mean Time Between Breakdowns MTBF Mean Time Between Failures MTBJ Mean Time Between Jams MTF Microsoft Tape Format [Microsoft] + Modulation Transfer Function MTRP Maximum Transfer Rate Performance MTS Message Transfer Service/System + Microsoft Transaction Server [Microsoft] + Multichannel Television Sound MTST Magnetic Tape Selectric Typewriter [IBM] MTT Multi-Transaction Timer MTTD Mean Time To Diagnose MTTF Mean Time To Failure MTTR Mean Time To Repair MTU Maximum Transmission Unit MUA Mail User Agent MUD Multi-User Dialogue/Dimension/Domain/Dungeon [Internet] MUL Multiply MULTICS Multiplexed Information and Computing Service MUMPS Massachusetts General Hospital Utility Multi-Programming System (Programming Language) MUSE Multi-User Shared Environment MUT Monitor Under Test MUX Multiplexer mV Millivolt MVB Multimedia Viewer Book MVC Multimedia Viewer Compiler MVDM Multiple Virtual DOS Machines MVGA Monochrome Video Graphics Array MVIP Multi-Vendor Integration Protocol MVP Multimedia Video Processor MVS Multiple Virtual Storage MVT Multiprogramming with a Variable number of Tasks MX Mail Exchanger [Internet] MXS Microsoft Exchange Server [Microsoft] MZR Multiple Zone Recording N... NAC Network Adapter Card NACD National Association of Computer Dealers NACS National Advisory Committee on Semiconductors NAE Not Above or Equal NAK Negative Acknowledgment NAM Number Assignment Module NAMPS Narrow-Band Analog Mobile Phone Service [Motorola] NAND Not And NANO One thousand-millionth NAP Network Access Point NAPLPS North American Presentation Level Protocol Syntax (graphics) NAS Network Access Server + Network Application Support [DEC] + Network Attached Storage NASA National Aeronautics and Space Administration NASDAQ National Association of Securities Dealers Automatic Quotation NASI NetWare Asynchronous Services Interface [Novell] NASIRC NASA Automated Systems Internet Response Capability NASKER NASA Ames Kernel (benchmark) NAT Network Address Translators NAU Network Addressable Unit NAWS Negotiate About Window Size NBE Not Below or Equal NBI Nothing But Initials NBMA Non-Broadcast Multi Access NBS Narrowband Socket + National Bureau of Standards + Numeric Backspace NC Network Computer + No Carry + Numerical Control NCA Network Communications Adapter + Network Computing Architecture [Oracle] NCC Network Control Center NCD Network Computing Device .NCF Netware Command File [Novell] NCGA National Computer Graphics Association NCIC National Crime Information Center NCMT * Numerical Control for Machine Tools NCOS Network Computer Operating System NCP NetWare Core Protocol + Not Copy Protected + Network Control Processor/Program/Protocol NCR National Cash Register (Company) NCSA National Center for Supercomputing Applications NCSC National Computer Security Center NCSI Network Communications Services Interface [Network Products Corp.] NDB Non-Directional Beacon NDDK Network Device Development Kid [Microsoft] NDEF Not to be Defined NDIS Network Device/Driver Interface Specification NDL Network Data Language NDMP Network Data Management Protocol NDN Non-Delivery Notice NDP Numeric Data Processor NDR Network Data Representation NDRO Non-Destructive Read Out NDS NetWare Directory Service [Novell] .NDX Index (file name extension) NEC Nippon Electric Company NED NASA Extragalactic Database [NASA] NEG Negative + Negate NEMA National Electrical Manufacturers Association NEP Network Entry Point NES National Education Supercomputer NEST Novell Embedded Systems Technology [Novell] .NET Networks (Domain Name) [Internet] NetBIOS Network Basic Input/Output System [IBM] NetBEUI NetBIOS Extended User Interface [IBM] NETMON Network Monitor .NEW New Information (file name extension) NEWS NetWare Early Warning System [Frye Computer] + Network Extensible Window System NEWS. Current events [USENET Newsgroup Category] NEXT Near-End Crosstalk NFF No Fault Found NFS Network File System [Sun] NG No Good NGE Not Greater or Equal NGI Next-Generation Internet NHC National Hurricane Center NHR National Handwriting Recognition NHRP Next Hop Resolution Protocol N/I Non-Interlaced NIA Next Instruction Address NIC Network Information Center [Internet] + Network Interface Card + Numeric Intensive Computing NICAD Nickel-Cadmium NICOLAS Network Information Center OnLine Aid System [NASA] NID New Interactive Display [NEC] + Next ID NII National Information Infrastructure NIM Network Installation Management [IBM] NIMH Nickel-Metal Hydride NIO Native Input/Output NIPS Network I/Os Per Second NIR Network Information Retrieval NIS Network Information Service [Unix] N-ISDN Narrowband ISDN + National ISDN NISO National Information Standards Organization NISP Networked Information Services Project NIST National Institute for Standards and Technology NITC National Information Technology Center NIU Network Interface Unit NJE Network Job Entry (protocol) [IBM] NL New Line NLE Not Less or Equal NLM NetWare Loadable Module [Netware] NLP Natural-Language Processing NLQ Near Letter Quality NLSFUNC National Language Support Function NLV National Language Version [IBM] NMI Non-Maskable Interrupt NMM NetWare Management Map [NetWare] NMOS Negative Channel Metal-Oxide Semiconductor NMP Network Management Protocol [AT&T] NMS Network Management System [Novell] NN Network Node + No News [Internet] NNI Network to Network Interface NNM Network Node Manager NNTP Network News Transfer Protocol [Internet] NOC Network Operations Center .NOM Individual with Personal Site (Domain Name) [Internet] NOP No Operation NOPAC Network OPAC NOR Not Or NOS Network Operating System NPA Network Printer Alliance + Numbering Plan Area NPI Network Printer Interface NPL Nonprocedural Language NPS Novell Productivity Specialist [Novell] NPT Non-Programmable Terminal NPTN National Public Telecomputing Network NPU Natural Processing Unit NPX Numeric Processor Extension NQS Network Queuing System [Cray] NRC National Research Council (Canada) NREN National Research and Education Network NRM Network Resource Manager NRZ Not Return to Zero NRZI Non Return to Zero Inverted NS Nanosecond (one-billionth of a second) + National Semiconductor (as in Ns16550 UART) + Network Supervisor + Non S NSAP Network Service Access Point NSAPI Netscape Server API [Netscape] NSA POLY National Security Agency Polygraph NSERC National Sciences and Engineering Research Council (Canada) NSF National Science Foundation NSFNET National Science Foundation Network NSI NASA Science Internet NSLOOKUP Name Server Lookup [Unix] NSM Netscape Server Manager [Netscape] NSP Native Signal Processing [Intel] + Network Service Provider NSSC NASA Standard Spacecraft Computer NSTC National Science and Technology Council NSTL National Software Testing Labs NT New Technology [Microsoft] NT-1 Network Terminator Type 1 NTAS NT Advanced Server [Microsoft] NTF No Trouble Found NTFS New Technology File System [Microsoft] NTIA National Telecommunications and Information Administration NTIS National Technical Information Service NTP Network Time Protocol NTRAS NT Remote Access Services [Microsoft] NTSA NetWare Telephony Services Architecture [Novell] NTSC National Television Standards Committee NTU Network Termination Unit NUI Network User Identification + Network User Interface + Notebook User Interface [Go Corporation] NUL Null + (dummy device) + (no device) NUMA Non-Uniform Memory Access NV No Overflow NVM Non-Volatile Memory NVOD Near-Video On Demand NVP Nominal Velocity of Propagation NVRAM Non-Volatile Random Access Memory NVT Network Virtual Terminal + Novell Virtual Terminal [Novell] NWS NetWare Web Server [Netware] NYM Anonymous O... OAB One-to-All Broadcast OAD Open Architecture Driver [Bernoulli] OAG Official Airline Guide + Online Air Guide OAI Open Applications Interface OAS One-to-All Scatter OBD On Board Diagnostics OBEX Object Exchange [Borland] OBJ Object OC Optical Carrier OCE Open Collaborative Environment [Apple] OCF Objects Components Framework [Borland] OCL Operation Control Language + Operator Control Language OCR Optical Character Recognition OCS On-Card Sequencer OCX OLE Custom Control ODA Open document Architecture ODAPI Open Database Application Programming Interface [Borland] ODBC Object-Oriented Database Connectivity + Open Data Base Connectivity [Microsoft] ODBMS Object-Oriented Database Management System (also see OODMS) ODI Open Datalink Interface [Novell] + Open Device Interconnect [NetWare] ODIF Open document Interchange Format ODL Object Definition Language ODM Object Data Manager [IBM] + Optimized Distribution Model [Compaq] ODMA Open document Management API ODP Open Distributed Processing ODS Open Data Services [Microsoft] + Operational Data Store ODSI Open Directory Service Interface [Microsoft] ODT Open Desk OEM Original Equipment Manufacturer OEP Operand Execution Pipeline OF Overflow Flag OFB Output Feedback (mode) OFDM Orthogonal Frequency Division Multiplexing OFMT Output Format for Numbers OFS Object File System [Microsoft] + Output Field Separator OFX Open Financial Exchange OH Off Hook OHCI Open Host Controller Interface OIDL Object Interface Definition Language OIS Office Information System OLAP On-Line Analytical Processing OLCP On-Line Complex Processing .OLD Old version (file name extension) OLE Object Linking and Embedding [Microsoft] OLGA On-Line Guitar Archive OLI Optical Line Interface [AT&T] OLMC Output Logic Macrocell OLSP On-Line Service Provider OLTP On-Line Transaction Processing OM Object Manager OMA Object Management Architecture [Microsoft] OME Open Messaging Environment (protocol) OMF Object Module Format [Microsoft] + Open Media Framework + Open Message Format OMG Object Management Group OMI Open Messaging Interface [Lotus] OML Object Manipulation Language OMR Optical Mark Recognition ONC Open Network Computing [Sun] ONDS Open Network Distribution Services [IBM] ONE Open Network Environment [Netscape] ONMS Open Network Management System ONU Optical Network Unit OOB Out Of Band OODB Object-Oriented Database OODMS Object-Oriented Database Management System (also see ODBMS) OOL Object-Oriented Language OOOS Object-Oriented Operating System OOPL Object-Oriented Programming Language OOPS Object Oriented Programming and Systems OOS Object-Oriented Systems + Off-line Operating Simulator OOT Object-Oriented Technology OOUI Object Oriented User Interface OP Operation + Optical + Output OPAC Online Public Access Catalog [Internet] OPC Organic/Optical Photoconductor OPCODE Operational Code OPD Operand OPI Open Prepress Interface OPM Operations Per Minute OPS Open Profiling Standard + Operations OPT Open Protocol Technology .OPT Options (file name extension) OPUS Octal Program Updating System OQL Object Query Language ORACLE On-Line Inquiry and Report Generator (UNIX DB program) ORB Object Request Broker [Microsoft] ORDVAC * Ordnance Variable Automatic Computer .ORG Non-Profit Organizations (Domain name) [Internet] ORI Online Retrieval Interface .ORI Original (file name extension) OROM Optical Read-Only Memory ORS Output Record Separator OS Operating System OS/2 Operating System/2 [IBM] OSA Open scripting/System Architecture OSD Open Software Description/Distribution OSE Office Server Extensions [Microsoft] OS/E Operating System/Environment OSF Open Software Foundation OSI Open Systems Interconnection OSM Off-Screen Model OSP On-Screen Programming + Optical Storage Processor OSPF Open Shortest Path First OSQL Object Structured Query Language OSR2 OEM Service Release 2 [Microsoft] OSS Open Source Software OT Object Technology OTA Operation-Triggered Architecture OTDR Optical Time Domain Reflectometer OTF Open Token Foundation OTP One-Time Programmable OUI Organizationally Unique Identifier OURS Open Users Recommended Solutions .OUT Outlines (file name extension) OUTS Output String OV Overflow OVAL Object-Based Virtual Application Language [Psion] .OVL Program Overlay (file name extension) .OVR Program Overlay (file name extension) OWL Object/Open Windows Library [Borland] P... P3P Platform for Privacy Preferences Project PAB Personal Address Book PABX Private Automatic Branch Exchange PACE Priority Access Control Enabled [3Com] PACS Picture Archiving and Communication System PACS-L Public Access Computer Systems List [Internet] PAD Packet Assembler/Disassembler PADS Pen Application Development System [Slate Corporation] PAIH Public-Access Internet Host [Internet] PAIS Public-Access Internet Site [Internet] .PAK Packed (compressed file name extension) [NoGate Consulting] PAL Paradox Applications Language [Borland] + Phase Alternating Line + Programmed Array Logic + Programming Assembly Language .PAL Palette (file name extension) PALC Plasma-Addressed Liquid Crystal (display) PALS Principles of the Alphabet Literacy System PAM Pulse Amplitude Modulation PAN Personal Area Network [GTE] PAP Packet-level Procedure + Password Authentication Protocol + Printer Access Protocol PAR Personal Animation Recorder + Parallel PARA Paragraph PARC Palo Alto Research Center [XEROX] PA-RISC Precision Architecture-RISC [HP] .PAS PASCAL source code (file name extension) PASCAL (Programming Language named for Blaise Pascal) .PAT Patch + Pattern (file name extensions) PATN Promotional Port Access Telephone Number PAX Portable Archive Exchange [Unix] PB Petabyte (1,024 terabytes) (One Million Billion characters of information) PBA Printed Board Assembly PBE Prompt By Example PBGA Plastic Ball Grid Array PBX Private Branch Exchange PC Personal Computer + Printed Circuit + Program Counter PCACIAS Personal Computer Automated Calibration Interval Analysis System PCB Printed Circuit Board + Program Control Block PCBC Plain/Propagating Cipher Block Chaining PCD Photo Compact Disk PC-DOS Personal Computer - Disk Operating System [IBM] PCEB PCI to EISA Bridge [Intel] PCI Peripheral Component Interconnect/Interface PCIC PC-Card Interrupt Controller PC-I/O Program Controlled I/O PCL Printer Command Language [HP] + Process Control Language PCM Personal Computer Manufacturer + Printer Cartridge Metric [HP] + Pulse Code Modulation PCMA Paired Carrier Multiple Access PCMC PCI, Cache, Memory Controller [Intel] PCMCIA Personal Computer Memory Card International Association PCMIM Personal Computer Media Interface Module PCN Personal Computer Network PCNFS Personal Computer Network File System PCO Point of Control and Observation PCS Patchable Control Store + Personal Communication Services/System + Personal Conferencing Specification + Planning Control Sheet + Print Contrast Signal + Process Control Systems + Program Counter Store + Project Control System PCT Private Communications Technology .PCT Picture (file name extension) .PCX Picture Image (file name extension) PD Phase-Change Dual + Public Domain PDA Personal Digital Assistant .PDB Pilot Database (file name extension) [Palm Pilot] PDC Primary Domain Controller PDD Physical Device Driver + Portable Digital document PDF Package Definition File + Portable document Format + Portable document File + Processor Defined Function + Program Development Facility .PDF Printer Description (file name extension)[Borland,Lotus] PDH Plesiosynchronous Digital Hierarchy PDIAL Public Dialup Internet Access List [Internet] PDL Page Description Language + Program Description Language + Program Design Language PDM Product Data Management PDN Public Data Network PDO Portable Distributed Objects [Next] PDP Parallel Data Processing + Plasma Display Panel + Programmable Data Processor + (DEC Computer System Designation, i.e. PDP-8, PDP-11) PDS Packet Driver Specification + Partitioned Data Set + Planetary Data System + Portable document Software + Processor Direct Slot [Macintosh] PDSS Post Development and Software Support PDT Performance Diagnostic Tool [IBM] + Programmable Drive Table PDU Plug Distribution Unit + Protocol Data Unit .PDX Paradox files (file name extension) [Borland] + Printer Description Extension (file name extension) PE Parity Even + Processing Element + Protect Enable PEA Pocket Ethernet Adapter PEL Picture Element [IBM] PEM Privacy-Enhanced Mail [Internet] PEN SDK Pen Computing Software Development Kit PEP Packet Exchange Protocol + Packetized Ensemble Protocol [Telebit] PERC Power Edge RAID Controller PERL Practical Extraction and Report Language [Unix] PERT Program Evaluation and Review Technique PES Positioning Error Signal + Processor Enhancement Socket Processor Upgrade Socket PET Print Enhancement Technology [Compaq] .PFB Printer Font Binary (file name extension) PFE Programmer's File Editor .PFM Printer Font Metrics (file name extension) [Windows] PFN Page Frame Number PFR Power-Fail Restart PGA Pin Grid Array + Professional Graphics Adapter [IBM] PGC Program Group Control [Microsoft] PGDN Page Down .PGL Graphics (file name extension) [Hewlett-Packard] PGM Program PGML Precision Graphics Markup Language PGP Pretty Good Privacy (name of encryption program) .PGP ProGram Parameter (file name extension) [AutoCAD] PGUP Page Up PHIGS Programmers' Hierarchical Interactive Graphics Standards .PHO Phone List (file name extension) PHS Personal Handyphone System PI Program Interruption PIA Peripheral Interface Adapter PIC Personal Information Carrier + Personal Intelligent Communicator + Platform for Internet Content + Priority Interrupt Controller + Program Interrupt Controller PICS Platform for Internet Content Selection [W3C] PICT Picture PID Process Identification Number + Product ID + Proportional, Integral, Derivative PIER Procedures for Internet/Enterprise Renumbering PIF Picture Interchange Format File + Program Information File PII Program Integrated Information PILOT Programmed Inquiry Learning Or Teaching PilotACE* Pilot Automatic Computing Engine PIM Personal Information Manager + Primary Interface Module + Protocol-Independent Multicast PIN Personal Identification Number + Process Identification Number [Unix] PINE Pine Is Not Elm (original usage) + Program for Internet News & Email (present usage) PING Packet Internet Groper PIO Parallel Input/Output + Processor Input/Output + Programmed Input/Output PIP Pattern and Information Processing + Picture In Picture + Problem Isolation Procedure + Programmable Interconnect Point PIPO Parallel In, Parallel Out PIR Protocol Independent Routing PIT Programmable Interval Timer PIXEL Picture Element PJPEG Progressive JPEG PKC Public Key Cryptography PL Plus .PL Pearl Language (file name extension) PLA Programmable Logic-Array PLATO Programmed Logic for Automatic Teaching Operations PLC Programmable Logic Controller PLCC Plastic Leadless Chip Carrier PLD Programmable Logic Device PLDS Pilot Land Data System [NASA] PLL Phase Locked Loop .PLL Prelinked Library (file name extension) [Clipper] PL/M Programming Language for Micros PLS Primary Link Station PLV Production Level Video PL/1 * Programming Language One PM Presentation Manager [IBM] + Preventative Maintenance + Process Manager P-MAIL Paper Mail PMD Packet Mode Data PMMU Paged Memory Management Unit PMOS Positive Channel Metal Oxide Semiconductor PMR Problem Management Report [IBM] PMS Policy Management System PN Processing Node P/N: Part Number PNA Programmable Network Access PNG Portable Network Graphics PNNI Private Network to Network Interface PNP Plug And Play PO Parity Odd POC Point Of Contact POD Plain Old Dos + Publishing On Demand POE Power Open Environment POH Power-On Hours POL Problem Oriented Language POP Point Of Presence + Pop from Stack + Post Office Protocol POP3 Post Office Protocol, Version 3 POPA Pop All Registers POPF Pop Flags POR Power-On-Reset POS Point Of Sale + Positive + Programmable Object Select POSIX Portable Operating System Interface for Unix POST Power-On Self Test POSTNET Postal Numeric Encoding Technique (bar code) POTS Plain Old Telephone Service + Plain Old Time-Sharing POWER Performance Optimization with Enhanced RISC [IBM] PowerPC Performance Optimization with Enhanced RISC-Performance Computing PP Parallel Port PPA Pixel Processing Accelerator .PPD Postscript Printer Description (file name extension) PPDS Personal Printer Data Stream [IBM] PPGA Plastic Pin Grid Array PPI Precise Pixel Interpolation PPM Pages Per Minute PPP Point-to-Point Protocol [Internet] PPS Packets Per Second + Power Personal Systems [IBM] PPTP Point-to-Point Tunneling Protocol [Microsoft] PQFP Plastic Quad Flat Pack PRACSA Public Remote Access Computer Standards Association PRAM Parallel Random-Access Machine + Parameter Random Access Memory .PRC Pilot Resource (file name extension) [Palm Pilot] .PRD Printer Driver (file name extension) [Microsoft] PRE Preformatted [HTML] PReP Power PC Reference Platform [IBM/Motorola] PRF Pulse Repetition Frequency .PRF Preferences (file name extension) [Grammatik IV] .PRG Program (file name extension) PRI Primary-Rate Interface PRINTF Print with Formatting [C Programming Language] PRISM Photo-Refractive Information Storage Material .PRJ Project (file name extension) [Borland] PRMD Private Management Domain [X.400] PRML Partial-Response Maximum-Likelihood .PRO Profile (file name extension) PROC Procedure PROFS Professional Office System [IBM] PROG Program + Programmer PROLOG Programming In Logic (Programming Language)(See HLL) PROM Programmable Read Only Memory PRN Printer .PRS Printer (file name extension) [WordPerfect] PRTSC Print Screen PS Proportional Spacing .PS Postscript (file name extension) PS/2 Programming System 2 [IBM] PSAPI Presentation Space Application Programming Interface PSC Personal Super Computer + Print Server Command + Product Service Center PSDN Packet-Switched Data Network PSDS Packet-Switched Data Service PSERVER Print Server [NetWare] PSF Permanent Swap File PSID Postscript Image Data PSINET (formerly Performance Systems International) PSM Printing Systems Manager PSN Packet Switching Network + Processor Serial Number PSP Personal Software Products (group) [IBM] + Program Segment Prefix PSPDN Packet-Switched Public Data Network P-SRAM Pseudo-Static Random Access Memory PSRT Postscript Round Table [GEnie] PSTN Public Switched Telephone Network PSU Power Supply Unit PSW Program Status Word .ps.Z Compressed Postscript (file name extension) [Unix] PT Page Table P/T Part Time PTD Parallel Transfer Disk Drive PTE Page Table Entry PTF Problem Temporary/Trouble Fix [IBM] PTI Packet Type Identifier PTT Postal Telephone & Telegraph PUB Public (directory) [Internet] + Publish .PUB Publication (file name extension) [Ventura] PUN Physical Unit Number PUP PARC Universal Packet (protocol) PUS Processor Upgrade Socket PUSHA Push All Registers PUSHF Push Flags PVC Permanent Virtual Circuit + Polyvinyl Chloride PVM Parallel Virtual Machine + Pass-through Virtual Machine (protocol) [IBM] PVP Parallel Vector Processing PVS Parallel Visualization Server PW Password PWB Printed Wire Board + Programmer's Workbench [Microsoft] PWD Print Working Directory [Unix] PWR Power PWSCS Programmable Workstation Communication Services [IBM] .PX Primary Index (file name extension) [Paradox] Q... QA Quality Assurance QAM Quadrature Amplitude Modulation QBE Query By Example QBF Query by Form QBIC Query By Image Content [IBM] QC Quality Control QD Querty/Dvorak QDA Qualitative Data Analysis QDOS Quick and Dirty Operating System .QDI Quicken Dictionary (file name extension) [Intuit] .QDT Quicken Data (file name extension) [Intuit] QEMM Quarterdeck Expanded Memory Manager [Quarterdeck Corp.] QFA Quick File Access QFE Quick-Fix Engineering [Microsoft] QFP Quad Flat Pack QIC Quality Information Using Cycle Time [Hewlett-Packard] + Quarter-Inch Cartridge .QIF Quicken Import File/Interchange Format (file name extension) .QMT Quicken Memorized List (file name extension) [Intuit] .QNX Quicken Indexes to Data (file name extension) [Intuit] QOS Quality Of Service QPG Quantum Phase Gate QPSK Quadrature Phase Shift Keying QTC Quicktime Conferencing [Macintosh] R... RA Return Authorization .RA Real Audio (file name extension) RACF Resource Access Control Facility RAD Rapid Application Development RADAR Radio Detection And Ranging + Rights, Availabilities, Distribution Analysis and Reporting [Disney] RADB Routing Arbiter Data Base RADIUS Remote Authentication Dial-In User Service RADSL Rate Adaptive Digital Subscriber Line RAG Row Address Generator RAID Redundant Arrays of Independent Disks + Redundant Arrays of Independent Drives + Redundant Arrays of Inexpensive Disks RAIS Redundant Arrays of Inexpensive Systems RALU Register Arithmetic Logic Unit RAM Random Access Memory .RAM Real Audio Metafile (file name extension) RAMDAC Random Access Memory Digital-to-Analog Converter [Sierra] RAMP Remote Access Maintenance Protocol [Internet] RAND Random RAP Rapid Application Prototyping RARP Reverse Address Resolution Protocol RAS Random Access Storage + Reader Admission System [British Library] + Reliability, Availability and Serviceability + Remote Access Service + Row Address Select RASAPI Remote Access Service Application Programming Interface [Microsoft] .RAT Rating (file name extension) RAVE Rendering Acceleration Virtual Engine [Apple Computer] .RAW Raw Data (file name extension) RB Right Button (of 2 or 3 button Mouse) RBBS Remote Bulletin Board System RBCS Remote Bar Code System RBOC Regional Bell Operating Company .RC Resource (file name extension) RCL Rotate Carry Left RCP Remote Control Panel + Remote Copy [Internet] + Restore Cursor Position RCPT Recipient RCR Rotate Carry Right RCS Records Communications Switching System + Revision Control System [Unix] RD Receive Data + Remove Directory R&D Research and Development RDA Remote Database Access RDB Receive Data Buffer + Relational Database RDBMS Relational Database Management System RDCLK Received Timing Clock RDF Resource Description Framework [W3C] RDO Remote Data Object RDP Reliable Datagram Protocol + Remote Desk Protocol RDRAM Rambus DRAM RDSR Receiver Data Service Request RDTO Receive Data Transfer Offset [IBM] RDX Realistic Display Mixer .REC Recorder (file name extension) + Recreational or Entertainment Activities (Domain Name) [Internet] REC. Recreation [USENET Newsgroup Category] .REF Reference (file name extension) REG Register REGAL Rigid Epoxy Glass Acrylic Laminate RELSECT Relative Sector REM Remark + Remote + Ring Error Monitor REN Rename + Ringer Equivalence Number REP Repeat REPE Repeat while Equal REPNE Repeat while Not Equal REPNZ Repeat while Not Zero REPZ Repeat while Zero REQ Request REREG Re-Register RES Remote Execution Service + Reset + Resolution .RES Resource (file name extension) RET Resolution Enhancement Technology [HP] + Return RETR Retrieve REX Relocatable Executable REXEC Remote Execution REXX Restructured Extended Executor (language) [IBM] RF Radio Frequency RFC Request For Comments [Internet] RFD Request for Discussion [Internet] RFI Radio Frequency Interference + Request for Information RFID Radio Frequency Identification RFP Request for Proposal RFQ Request for Quotation RFS Remote File Sharing + Remote File System RFT Revisable Form Text + Rich Text Format RFU Reserved For Future Use RGB Red-Green-Blue (color model) RI Referential Integrity + Ring Indicate RID Relative Identifier RIFF Resource Interchange File Format [Microsoft] RIM Remote Installation and Maintenance [Microsoft] RIME RelayNet International Message Exchange RIP Raster Image Processor + Remote Imaging Protocol + Routing Information Protocol [Novell] RIPEM Riordan's Internet Privacy Enhanced Mail RIPS Raster Image Processing System RISC Reduced Instruction Set Computing RIT Raw Input Thread [Microsoft] RJE Remote Job Entry RLD Received Line Detect RLE Run Length Encoded RLL Run Length Limited RLN Remote LAN Node [DCA] RLOGIN Remote Login RLSD Received Line Signal Detected RLSI * Ridiculously Large-Scale Integration RM Reset Mode RMA Return Material Authorization + Return to Manufacturer Authorization RMB Right Mouse Button RMDIR Remove Directory RMI Remote Messaging Interface + Remote Method Invocation [Sun] RMON Remote Monitor/Monitoring RMP Remote Maintenance Processor [IBM] RMS Record Management Services + Root Mean Square RMW Read-Modify-Write RN Read News [Internet] RNA Remote Network Access [Microsoft] RND Random RNG Random Number Generator RNP Regional Network Provider R-O Read Only ROB Reorder Buffer [Intel] ROI  Return On Investment ROL Rotate Left ROLAP Relational On-Line Analytical Processing ROM Read Only Memory ROOM Real-Time Object-Oriented Modeling ROP Raster Operation + RISC Operation ROR Rotate Right ROS Read-Only Storage [IBM] ROSCOE Remote Operating System Conversational Online Environment ROT Running Object Table RPC Remote Procedure Call RPG Report Program Generator (Programming Language) RPL Resident Programming Language + Requested Privilege Level RPN Real Page Number + Reverse Polish Notation RPRINTER Remote Printer [NetWare] RPPROM Reprogrammable PROM RPR Relative Performance Rating RPT Repeat RPQ Request for Price Quotation RQBE Relational Query By Example [Fox Pro] RR Real Reality RS Radio Shack + Recommended Standard (as in RS-232) [EIA] + Record Separator + Request to Send RSA129 (129 digit cryptographic security number named after its inventors: Drs. Ronald L. Rivest, Adi Shamir and Leonard M. Adleman) RSAC Recreational Software Advisory Council RSCS Remote Spooling Communications System RSD Route Server Daemon RSH Remote Shell RSI Repetitive Strain Injury (Carpal Tunnel Syndrome) RSL Request-and-Status Link RSP Required Space Character RSPX Remote Sequenced Packet Exchange RST Reset + Restart RSTS Resource Sharing Time Sharing [Digital] RSVP Resource Reservation Protocol RSX Realistic Sound Experience + Real Time Resource Sharing Executive RT Real Time + RISC Technology + Run Time R/T Receive/Transmit RTAM Remote Terminal Access Method RTC Real-Time Clock RTDM Real-Time Data Migration RTEL Reverse Telnet [Internet] RTF Rich Text Format RTL Register Transfer Language/Level + Resistor Transistor Logic + Right-To-Left + Run Time Library RTM Response Time Monitor + Runtime Manager [Borland] RTMP Routing Table Maintenance Protocol RTN Reuters Transaction Network RTOS Real-Time Operating System RTP Rapid Transport Protocol + Real-Time Protocol RTS Remote Takeover System + Request To Send RTSP Real-Time Streaming Protocol RTTI Runtime Type Information RTTY Radio Teletypewriter (Communications) RTV Real Time Video RTX Run Time Extension RUN Rewind/Unload [IBM] RVA Relative Virtual Address RVI Reverse Interrupt R/W Read/Write RWIN Receive Window RWM Read-Write Memory RX Receiver RXD Receive Data S... SA Selective Availability SAA Systems Application Architecture [IBM] SABRE Semi-Automatic Business Research Environment SAC Single Attachment Concentrator SACL System Access Control List SADL Synchronous Data Link Control [Racal-Vadic] SAINT * Symbolic Automatic Integrator SAL Shift Arithmetic Left SAM Serial Access Memory + Sequential Access Method + Security Accounts Manager [Microsoft] + Single Application Mode [Microsoft] SAN Storage/System Area Network SANE Standard Apple Numeric Environment SAP Second Audio Program + Service Access Point [DEC] + Service Advertising Protocol + * Symbolic Assembly Program + Systems, Applications and Products (company) SAPI Speech Application Program Interface [Microsoft] SAR Segmentation and Reassembly + Shift Arithmetic Right + Successive Approximation Register + Synthetic Aperature Radar SAS Sales Accounting System + Single Attached Station + Single Audio System + Statistical Analysis System SASI Shugart Associates System Interface (SCSI originated from SASI) SATAN Security Administrator Tool for Analyzing Networks .SAV Saved (file name extension) SAVDM Single Application VDM SB Sound Blaster [Creative Labs] + Sound Board SBA Scene Balance Algorithms [Kodak] SBB Subtract With Borrow SBC Single-Board Computer SBCS Single-Byte Character Set SBI Sound Blaster Instrument .SBR Source Browser (file name extension) [Borland] SBS Smart Battery Specification [Duracell/Intel] .SC script (file name extension) SCADA Supervisory Control and Data Acquisition SCAM SCSI Configuration Automatically SCAS Scan String SCB Subsystem Control Block [IBM] SCC Serial Communications Controllers + Serial Controller Chip + Synchronous Channel Check [IBM] SCCS Source Code Control System SCD Standard Color Display S-CDMA Synchronous Code-Division Multiple Access SCF System Control Facility SCI Scalable Coherent Interface + Serial Communications Interface SCI. Science [USENET Newsgroup Category] SCIL Serial Control Interface Logic SCLM Software Configuration and Library Management [IBM] SCM ScreenCam Format [Lotus] + Software Configuration Management + Station Class Mark SCO Santa Cruz Operation (Software Company) SCOPE Simple Communications Programming Environment [Hayes] SCP Save Cursor Position + Subsystem Control Port + System Control Program SCR Silicon Controlled Rectifier .SCR script (file name extension) SCRN Screen (video display) SCRS Scalable Cluster of RISC Systems SCSA Signal Computing System Architecture [Dialogic] SCSI Small Computer Systems Interface SD Send Data + Super Density SDA Software Disk Array + Source Data Automation + System Display Architecture [Digital] SDAM Single DOS Application Mode SDB Symbolic Debugger [Unix] SDD Software Description Database [Internet] + Subscriber Data document + System Distribution Directory SDF Space Delimited File + Space Delimited Format .SDF Standard Data Format (file name extension) SDH Synchronous Digital Hierarchy SDI Selective Dissemination of Information + Single document Interface Software Development Interface [Mosaic] SDK Software Development Kit [Microsoft] SDL Specification and Description Language SDLC Synchronous Data Link Control (protocol) SDM System Development Multitasking SDMS SCSI Device Management System [NCR] SDN Software Defined Network [AT&T] SDNS Secure Data Network Service SDR Streaming Data Request SDRAM Synchronous DRAM SD-ROM Super Density ROM SDS Sysops Distribution System SDSL Single-Line/Symmetric Digital Subscriber Line SD_STB Streaming Data Strobe [IBM] SDTV Standard Definition Television SDV Switched Digital Video [AT&T] SDX Storage Data Acceleration SEA Standard Extended Attribute [OS/2] .SEA Self Extracting Archive (file name extension) [Macintosh] SEAC * Name of first computer to use transistors, built by (National Bureau of) Standards Eastern Automatic Calculator (Also see SWAC) SEAL Segmentation and Reassembly Layer (protocol) + Screening External Access Link [Digital-DEC] SEC Single Error Correction SECAM Sequentiel Couleur Avec Memoire (Sequential Color With Memory) SECC Single Edge Contact Cartridge SED Stream Editor + Stream-Oriented Editor SEG Segment SEH Structured Exception Handling SEL Select SEM Scanning Electron Microscope + Standard Electronic Module + Strategic Enterprise Management [SAP] SEPP Secure Encryption Payment Protocol SER Serial SERCOS Serial Real-Time Communications System SET Secure Electronic Transaction + Softwave Engineering Technology .SET Driver Set (file name extension) [Lotus 1-2-3] [LDC] + Image Settings (file name extension) [Paradox] SETEXT Structure Enhanced Text [Internet] SEU Smallest Executable Unit SF Sign Flag SFC System File Checker SFD Start Frame Delimiter SFDR Spurious-Free Dynamic Range SFN Short File Name SFQL Structured Full-text Query Language SFS System File Server SFT System Fault Tolerance SFX Sound Effect(s) SGA Shared Global Area SGEN Signal Generator + System Generator SGDT Store Global Descriptor Table SGI Silicon Graphics, Inc. SGM Shaded Graphics Modeling SGML Standard Generalized Markup Language SGR Set Graphics Rendition SGRAM Synchronous Graphics RAM S/H Sample and Hold SHA Secure Hash Algorithm [NSA] SHAR Shell Archive SHED Segmented Hypergraphic Editor SHG Segmented Hypergraphics SHL Shift Logical Left SHR Shift Logical Right SHTML Server-Side Include HyperText Markup Language S-HTTP Secure Hypertext Transfer Protocol SHV Standard High-Volume .SHW Show (file name extension) SI Shift-In + Source Index + System Information + System Integration SIC Standard Industrial Code SID Security Identifier + Serial Input Data + Station Identification [AT&T] + Symbolic Interactive Debugger + System ID SIDF System Independent Data Format SIDH System Identification for Home Systems SIDT Store Interrupt Descriptor Table SIFT Stanford Information Filtering Tool SIG Special Interest Group SIGCAT Special Interest Group on CD-ROM Applications and Technology SIM Simulator SIMD Single Instruction, Multiple Data-stream (processor) SIMM Single In-line Memory Module SIMTEL Simulation and Teleprocessing SIMULA Simulation (language) SIO Serial Input/Output (communications driver) SIP Session Initiation Protocol + Single In-line Package SIPC Simply Interactive Personal Computer [Microsoft] SIPO Serial In, Parallel Out SIPP Single In-line Pin Package SIR Serial Infrared [Hewlett-Packard] SIRDS Single-Image Random Dot Stereogram SI/SO Serial In/Serial Out + Shift In/Shift Out SIT Special Information Tones .SIT Stuff-It (compressed file name extension) [Macintosh] SIU System Interface Unit SKIP Simple Key-Management for Internet Protocols [Sun] SKU# Stock Keeping Unit Number SLA Service Level Agreement SLC Subscriber Line Concentrator SLDT Store Local Descriptor Table SLED Single Large Expensive Disk SLIC System Level Integration Circuit +   System Licensed Internal Code [IBM] SLIM Structured Language for Internet Markup SLIP Serial Line Interface Protocol SLM Spatial Light Modulator SLMR Silly Little Mail Reader SLOSH Sea, Lake and Overland Surge from Hurricane (program) SLP Service Location Protocol SLSI Super Large-Scale Integration SLSS Systems Library Subscription Service [IBM] SLU Spoken Language Understanding SM Set Mode + Shared Memory SMART Self-Monitoring Analysis and Reporting Technology SMB Server Message Block (protocol) [MII] SMD Surface Mounted Device SMDR Station Message Detail Recording SMDS Switched Multimedia/Multi-Megabit Data Service SMF Single Mode Fiber + System Manager Facility [Compaq] SMI System Management Interrupt [Intel] SMIF Standard Mechanical Interface SMIL Synchronized Multimedia Integration Language S-MIME Secure MIME SMIT System Management Interface Tool [IBM] SMK Software Migration Kit [Microsoft] SML Standard Meta Language SMM System Management Mode [Intel] SMOBC Solder Mask Over Bare Copper SMP Simple Management Protocol + Symbolic Manipulation Program + Symmetrical Multi-Processing + Symmetric Multiprocessor .SMP Sample (file name extension) SMPC Shared Memory Parallel Computer SMPS Switching Mode Power Supply SMRAM System Management Random Access Memory SMS Small Messaging System + Storage Management Services [NetWare] + Storage Management Subsystem/System + Systems Management Server [Microsoft] SMSW Store Machine Status Word SMT Station Management (protocol) + Surface-Mount Technology SMTP Simple Mail Transfer Protocol SMU System Management Utility SN Serial Number S/N Signal-to-Noise (Ratio) SNA Systems Network Architecture [IBM] SNAP Sub-Network Access Protocol + Sub-Network Attachment Point SND Sound SNEWS Secure News Server [Internet] SNMP Simple Network Management Protocol SNOBOL String Oriented Symbolic Language (Programming Language) SNP Serial Number/Password [Omen Technology] SNR Signal-to-Noise Ratio SOA Start Of Authority SOC System On a Chip SOC. Social Issues [USENET Newsgroup Category] SOCKS Socket Secure (server) [Internet] SO-DIMM Small Outline DIMM SOE Standard Operating Environment SOH Start of Header SOHO Small Office/Home Office SOL Simulation Oriented Language SOM Start of Message + System Object Model [IBM] SONET Synchronous Optical Network SOP Small Outline Package + Standard Operating Procedures SOS Silicon On Sapphire + Sophisticated Operating System + Standards and Open Systems SOTA State Of The Art SOX Sound Exchange SP Service Pack [IBM] + Stack Pointer + System Product SPA Secure Password Authentication [Microsoft] + Software Publishers Association SPAN Space Physics Analysis Network SPARC Scalable Processor Architecture + Sun's Palo Alto Research Center SPC Small Peripheral Controller + Statistical Process Control SPCL Spectrum Cellular Corporation SPCS Stored Program Controlled Switch SPD Serial Presence Detect SPEC Systems Performance Evaluation Cooperative SPF Shortest Path First + System Programming Facility SPGA Staggered Pin-Grid Array SPI Security Parameters Index + Service Provider Interface + SCSI Parallel Interface SPID Service Profile/Provider Identifier SPIKE Science Planning Intelligent Knowledge-Based Environment [STScI] SPIRES Stanford Public Information Retrieval System [Stanford University] SPL Spooler + System Programming Language [HP] .SPL Spell Checker (file name extension) SPLD Simple Programmable Logic Device SPM System Performance Monitor [IBM] SPOOL Simultaneous Peripheral Operations On Line SPOT Shared Product Object Tree [IBM] SPP Sequenced Packet Protocol + Standard Printer Port SPPS Scalable Power Parallel System [IBM] SPR Special Purpose Register + Statistical Pattern Recognition + Symmetrical Phase Recording SPREAD * Systems Programming, Research, Engineering and Development [IBM] SPS Secure Packet Shield + Shock Protection System + Standby Power System SPSS Statistical Package for the Social Sciences SPT Sectors Per Track SPX Sequenced Packet Exchange [Novell] SQ Squeezed (files) SQE Signal Quality Error (test) SQL/DS Structured Query Language/Data System [IBM] SQOS Secure Quality Of Service SQRT Square Root SR Shift Register SRAM Shadow Random Access Memory + Static Random Access Memory SRAPI Speech Recognition API SRB Source-Route Bridge .SRC Source (file name extension) SRD Screen Reader System SRDRAM Self-Refreshed DRAM SRGB Sustained RGB (values) SRM Security Reference Monitor SRO Sharable and Read Only SRP Suggested Retail Price .SRP script (file name extension) SRPI Server-Requester Programming Interface SRQ Service Request SRR Serially Reusable Resource SRS Sound Retrieval System SS Stack Segment + Single Sided + Seconds SSA Serial Storage Architecture SSAP Source Service Access Point SSCP Systems Service Control Point [IBM] SSD Solid State Disk SSEC * Selective Sequence Electronic Calculator [IBM] SSGA System Support Gate Array SSH Secure Shell (protocol) SSI Server Side Includes + Single System Image + Small Scale Integration SSL Secure Sockets Layer SSPI Security Service Provider Interface [Microsoft] SSRP Simple Server Redundancy Protocol [Cisco] SST Spread-Spectrum Technology + Systems Services and Technology STA Spanning Tree Algorithm STAR Self Defining Text Archival STB Strobe STC Set Carry Flag STD Set Direction Flag + Standard STDA StreetTalk Directory Assistance [Banyan] STDAUX Standard Auxilary STDERR Standard Error STDIN Standard Input STDIO.H Standard Input/Output Header [C Programming Language] STDM Statistical Time Division Multiplexer STDOUT Standard Output STDPRN Standard Printer STEP Standard for Exchange of Product .STF Structured File (file name extension) [Lotus Agenda] STI Set Interrupt Flag S/TK Sectors Per Track STL Standard Template Library STN Super-Twist Nematic .STORE Businesses Offering Goods (Domain Name) [Internet] STOS Store String STP Secure Transfer Protocol + Shielded Twisted Pair (cable) + Signal Transfer Point + Synchronized Transaction Processing STR Store Task Register + Synchronous Transmitter Receiver STRESS Structural Engineering System Solver (Programming Language) STRUDL Structural Design Language (Programming Language) STScI Space Telescope Science Institute STT Secure Transaction Technology [Microsoft] STX Start of Text .STY Style (file name extension) [Ventura, Word, WordPerfect] SUB Subroutine + Substitute + Subtract SUN Sun Microsystems, Inc. .SUP Supplemental Dictionary (file name extension) [WordPerfect] SVC Switched Virtual Circuit SVF Simple Vector Format SVG Scalable Vector Graphics SVGA Super Video Graphics Array S-VHS Super VHS SVM System Virtual Machine [Microsoft] SVN Switched Virtual Network [IBM] SVR Server SVR# System V Release Number [AT&T] S/W Software SWAC * Mobile version of SEAC, built for deployment to White Sands, and named Standards Western Automatic Calculator SWAIS Simple Wide Area Information Server [Internet] SWAP Shared Wireless Access Protocol SWIG Simplified Wrapper and Interface Generator SWISH Simple Web Indexing System for Humans SWP Simple Web Printing .SWP Swap (file name extension) .SYL Syllabus (file name extension) SYLK Symbolic Link .SYM Symbols (file name extension) .SYN Synonym (file name extension) SYNC Synchronous SYS System .SYS System Configuration (file name extension) + System Device Driver (file name extension) SYSADMIN System Administrator SYSGEN System Generator SYSLOG System Log SYSMOD System Modification SYSOP System Operator SYSREQ System Request SZ Send ZModem [Unix] T... TAB Tape Automated Bonding TACS Total Access Communication System TAD Telephone Answering Device TAP Telelocator Alphanumeric Protocol TAPCIS The Access Program for the CompuServe Information Service TAPI Telephony Applications Programming Interface .tar Tape Archive (archived file name extension) [Unix] .tar.Z Compressed Archived files (file name extension) [Unix] TAS Telephone Access Server TASM Turbo Assembler [Borland] TAXI Transparent Asynchronous Transceiver/Receiver Interface TB Terabyte (1,024 gigabytes) (One Thousand Billion characters of information) T/B and TBBS The Bread Board System (BBS) TBGA Tape Ball Grid Array .TBK Toolbook (file name extension) TBU Tape Backup Unit TC Test Control + Transmission Control TCL Tool Command Language TCM Trellis-Coded Modulation TCO Total Cost of Ownership TCP Tape-Carrier Package TCP/IP Transmission Control Protocol/Internet Protocol TD Transmit Data TDC Tabular Data Control TDD Telecommunications Device for the Deaf TDtoDP Tablet Coordinates to Display Coordinates (converting) TDE Terminal Display Editor .TDF Trace Definition File (file name extension) [OS/2] + Typeface Definition File (file name extension) TDI Transport Device Interface TDM Technical document Management + Time Division Multiplexing TDMA Time Division Multiple Access TDMS Terminal Display Management System TDP Tag Distribution Protocol [Cisco] + Telelocator Data Protocol TDSR Transmitter Data Service Request TDR Time Domain Reflectometry TE/2 Terminal Emulator/2 [Oberon] TEB Thread Environment Block TEC Tokyo Electronics Corporation TED Tiny Editor TEI Terminal Endpoint Identifier TELCO Telephone Company TEML Turbo Editor Macro Language [Borland] TEMP Temporary TER Thermal Eclipse Reading [Sony] TERMPWR Terminator Power TFDD Text File Device Driver TFEL Thin-Film Electroluminescent .TFM Tagged Font Metric (file name extension) TFT Thin-Film Transistor (screens) TFTP Trivial File Transfer Protocol THD Total Harmonic Distortion .THD Thread (file name extension) THOMAS The (U.S.) House (of Representatives) Open Multimedia Access System THOR Tandy High-Performance Optical Recording THR Transmit Holding Register .THS Thesaurus (file name extension) TI Texas Instruments, Inc. TIA Telecommunications Industry Association + The Internet Adapter [Internet] TID Target ID TIES Time Independent Escape Sequence .TIF Tagged Image File (filename extension) TIFF Tagged Image File Format TIGA Texas Instruments Graphics Architecture TIGER ologically Integrated Geographic Encoding and Referencing TIIAP Telecommunications and Information Infrastructure Assistance Program [NII] TIM Technical Information Memo [Compaq] TIMEZONES - - - - - - - - - - - - - - - - - GMT Offsets Offsets Eastward from GMT (+) Offsets Westward from GMT (-) AST - Atlantic Standard Time -4:00 AT - Azores Time -2:00 AHD - Alaska-Hawaii Daylight ::: AHS - Alaska-Hawaii Standard -10:00 BLT - Baghdad Local Time +3:00 BST - British Summer Time ::: CAT - Central Alaska Time -10:00 CCT - China Coast Time +8:00 CDT - Central Daylight Time ::: CET - Central European Time +1:00 CLT - Cairo Local Time +2:00 CST - Central Standard Time -6:00 EAD - East Australian Daylight ::: EAS - East Australian Standard +10:00 EDT - Eastern Daylight Time ::: EET - Eastern European Time +1:00 EMT - Eastern Mediterranean +2:00 EST - Eastern Standard Time -5:00 GMT - Greenwich Mean Time +0:00 HST - Hawaii Standard Time -10:00 JST - Japanese Standard Time +9:00 MDT - Mountain Daylight Time ::: MET - Middle European Time +1:00 MST - Mountain Standard Time -7:00 MTS - Moscow Time Standard +3:00 MTD - Moscow Time Daylight ::: NT - Nome Time -11:00 NZT - New Zealand Time +12:00 PDT - Pacific Daylight Time ::: PST - Pacific Standard Time -8:00 PST - Pakistan Standard Time +5:00 WAS - West Australian Standard +7:00 WAT - West Africa Time -1:00 WED - Western Europe Daylight ::: WES - Western Europe Standard +0:00 YDT - Yukon Daylight Time ::: YST - Yukon Standard Time -9:00 IDLE- International Date Line East +12:00 IDLW- International Date Line West -12:00 TIMI Technology Independent Machine Interface [IBM] TIMS Text Information Management Systems TINA Telecommunication Information Networking Architecture TIP Terminal Interface Processor + Transaction Internet Protocol TITOFET Tunneling-In, Tunneling-Out Field Effect Transistor TK/TK Track to Track TLA Three-Letter Acronym TLB Translation Lookaside Buffer .TLB Table (file name extension) TLD Level Domain TLI Transport Layer Interface TLS Transport Layer Security TLU Table Lookup .TLX Telex (file name extension) TM Trademark TMDS Transition Minimized Differential Signaling .TML Template (file name extension) TMP Temporary TN Twisted Nematic TNC Terminal Node Controller TNO The Netherlands Organization ToC Table Of Contents TOD Time Of Day Technical and Office Protocol TPC Transaction-Processing Performance Council TPF Transactions Processing Facility [IBM] TPI Tracks Per Inch TPL Table Producing Language + Transaction Processing Language TPM Transactions Per Minute TPORT Twisted Pair Port Transceiver [AT&T] TPS Transactions Per Second + Transaction Processing System TPW Turbo Pascal for Windows TQFP Thin Quad Flat Pack TQM Total Quality Management TR Terminal Ready T/R Transmit/Receive TRACERT Trace Route [Microsoft] TRADIC * Transistorized Airborne Digital Computer (Name of first computer to be entirely transistorized) .TRM Terminal (file name extension) TRN Threaded Read News [Internet] + Token Ring Network TRON The Real-Time Operating System Nucleus TS Secret TSA Target Service Agent + Technical Support Alliance + Telephony Services Architecture TSAPI Telephony Services Application Program Interface [AT&T + Novell] TSB Termination Status Block TSD Type-Specific Driver TSE The Semware Editor TSO Time Sharing Option TSP Telephony Service Provider TSR Terminate and Stay Resident TSS Task State Segment + Time Sharing System TS/SI Secret/Sensitive Information .TST Test (file name extension) TSTN Triple Supertwisted Nematic TSV Tab Separated values TT Typewriter Text TTA Transport-Triggered Architecture TTCN Tree and Tabular Combined Notation .TTF TrueType Font (file name extension) TTL Transistor-Transistor Logic TTP Thermal-Transfer Printing TTS Text-To-Speech + Transaction Tracking System TTY Teletype TUCOWS The Ultimate Collection of Winsock Software TUI Text-Based User Interface [WordPerfect] TUMS Table Update and Management System [Stanford University] .TUT Tutorial (file name extension) TVF Table of contents Verbosely from File [UNIX] TVFS Toronto Virtual File System [IBM] TVI Television Interference TVOL Television On-Line TWAIN Technology Without Any Interesting Name (connection between application and scanner software) TWX Teletypewriter Exchange Service TXD Transmit Data .TXF Tax Exchange Format (file name extension) TXT Text TXT2STF Text To Structured File [Lotus Agenda] TZ Time Zone [Unix] U... UA User Agent + User Area UAE Unrecoverable Application Error UAM User Authentication Method UART Universal Asynchronous Receiver/Transmitter UBR Unspecified Bit Rate .UC2 Compressed File (file name extension) [UltraCompressor] UCE Unsolicited Commercial Email UCL Universal Communications Language UCS Unicode Conversion Support + Universal Character Set + User Coordinate System UCT Universal Coordinated Time UDA Universal Data Access [Microsoft] UDB Universal Data Base UDC Universal Decimal Classification + User Defined Commands UDD User Data document UDE Universal Data Exchange UDEC * Universal Digital Electronic Computer [Burroughs] UDF Universal Disk Format + User Defined Functions UDG User Defined Gateway UDP User Datagram Protocol UDT Uniform Data Transfer + User-Defined Type UFS Unix File System UG User Group UHCI Universal Host Controller Interface UHF Ultra-High Frequency UHL Universal Hypertext Link UI Unix International + User Interface UIC User Identification Code UID User Identifier UIMS User Interface Management System UL Underwriters Laboratories + Unordered List + Upload ULA Uncommitted Logic Array ULN Universal Link Negotiation ULSI Ultra Large Scale Integration UMA Unified Memory Architecture UMB Upper Memory Block [LIM/AST] UML Unified Modeling Language UMTS Universal Mobile Telecommunications System UNC Universal Naming Convention + Uuencoded Netnews Collator [Unix] UNCOL Universal Computed Oriented Language UNI User-Network Interface UNICOM Universal Integrated Communication (System) UNICOS Universal Compiler FORTRAN compatible UNII Unlicensed National Information Infrastructure UNIVAC Universal Automatic Computer UNIX (AT&T Bell Laboratories Operating System) UNMA Unified Network Management Architecture UP Uniprocessor UPC Universal Product/Program Code + User Parameter Control UPG Upgrade UPL User Program Language UPM Unix Programmer's Manual + User Profile Management [IBM] UPS Uninterruptible Power Supply/System URC Uniform Resource Characteristics + Uniform Resource Citation UREP Unix RSCS Emulation Protocol (protocol) URI Uniform Resource Identifier URL Uniform Resource Locator URN Uniform Resource Name/Number US Unit Separator USART Universal Synchronous-Asynchronous Receiver/Transmitter USB Universal Serial Bus [Intel] USENET User's Network [Internet] USERID User Identification USOC Universal Service Ordering Code USQ Unsqueezed (files) USR US Robotics (corporation) USRT Universal Synchronous Receiver/Transmitter USSA User Supported Software Association (United Kingdom) UT User Terminal UTC Coordinated Universal Time UTI Universal Text Interchange/Interface UTP Unshielded Twisted-Pair (cable) UU Uuencode/Uudecode UUCP Unix-To-Unix Copy Program UUD UUDecoding [Unix] UUDECODE Unix-To-Unix Decoding UUE UUEncoding [Unix] UUENCODE Unix-To-Unix Encoding UUI User-To-User Information [AT&T] UUID Universal Unique Identifier UV Ultraviolet V... VA Virtual Address + Visual Age [IBM] VAD value Added Dealer VADD value Added Disk Driver VADSL Very-High-Rate Asymmetric Digital Subscriber Line VAL value + Voice Application Language .VAL Validity Checks (file name extension) [Paradox] VAM Virtual Access Method VAN value Added Network VAP value Added Process VAR value Added Reseller + value Added Retailer + Variable VAST Variable Array Storage Technology VAX/VMS Virtual Address Extension/Virtual Memory System [DEC] VB Variable Block + Visual Basic [Microsoft] VBA Visual Basic for Applications [Microsoft] VBE/AI Vesa Bios Extension/Audio Interface VBI Vertical Blanking Interval VBNS Very High Speed Backbone Network Service [MCI + NSF] VBR Variable Bit Rate VBRUN Visual Basic Runtime vbs Visual Basic script .VBX Visual Basic Extension (file name extension) VCC Virtual Channel Connection VCD Virtual Communications Driver VCI Virtual Circuit Identifier VCL Visual Component Library VCN Virtual Cluster Number VCOS Visual Caching Operating System [AT&T] VCPI Virtual Control Program Interface VCR Video Cassette Recorder VDD Virtual Device Driver VDDM Virtual Device Driver Manager VDE Video Display Editor + Visual Development Environment VDISK Virtual Disk VDM Virtual DOS Machine [IBM] VDMAD Virtual Direct Memory Access Device [Microsoft] VDS Virtual DMA Services VDSL Very-High-Data-Rate Digital Subscriber Line VDT Video Dial Tone + Video Display Terminal VDU Video Display Unit + Visual Display Unit VEGA Video-7 Enhanced Graphics Adapter [Video-7, Inc.] VEMM Virtual Expanded Memory Manager VEMMI Versatile Multimedia Interface VER Verify + Version VERONICA Very Easy Rodent-Oriented NET-Wide Index to Computer Archives [Internet] VERR Verify Read Access VERW Verify Write Access VES Video Encoding Standard [Oracle] VESA Video Electronics Standards Association VF Virtual Floppy VFAT Virtual File Allocation Table [Microsoft] V.FC Version.First Class (communications standard) VFD Vacuum Fluorescent Display VFW Video For Windows [Microsoft] VGA Video Graphics Array VGC Video Graphics Controller VHDL VHSIC Hardware Description Language VHF Very-High Frequency VHS Very High Speed + Video Home System + Virtual Host Storage VHSIC Very High Speed Integrated Circuit VI Visual Interactive (editor) [UNIX] VIA Virtual Interface Architecture [Intel] VIE Virtual Information Environment VIF Virtual Interface + Virtual Interrupt Flag VIM Vendor Independent Mail + Vendor Independent Messaging + Video Interface Module VIO Video Input/Output + Virtual Input/Output VINES Virtual Networking System [Banyan] ViP Visual Programming [Lotus] VIP Variable Information Processing + Video Information Provider + Virtual Interrupt Pending VIPER Verifiable Integrated Processor for Enhanced Reliability VIS Video Information System [Tandy] + Visual Instruction Set [Sun] + Voice Information System VJ HEADER Van Jacobsen Header (compression) [Unix] VLAN Virtual Local Area Network VL-BUS Vesa Local-Bus [VESA] VLD Variable-Length Decoder VLF Very Low Frequency VLINK Visited Link [HTML] VLIW Very Large Instruction Word VLM Virtual Loadable Module VLSI Very Large Scale Integration VLSIPS Very Large Scale Immobilized Polymer Synthesis VLT Variable List Table VM Virtual Machine + Virtual Memory VMA Virtual Memory Address VMB Virtual Machine Boot VME Versa Module Eurocard + Virtual Memory Environment VML Vector Markup Language [Microsoft] VMM Virtual Machine/Memory Manager VMOS Vertical MOS VMP Virtual Modem Protocol VMS Virtual Machine Storage + Virtual Memory System + Voice Message System VMT Virtual Memory Technique VNA Virtual Network Architecture VOC Creative Voice (format) [Sound Blaster] VOD Video On Demand VOIP Voice Over Internet Protocol VOL Volume VOM Volt-Ohm-Milliammeter VOR Visions Of Reality VOS Verbal/Voice Operating System VP Virtual Path VPD Virtual Printer Device + Vital Product Data [IBM] VPDN Virtual Private Data Network VPDS Virtual Private Data Service [MCI] VPE Video Port Extensions [Microsoft] + Visual Programming Environment VPL Virtual Programming Language VPM Video Port Manager VPN Virtual Page Number + Virtual Private Network VPS Voice Processing System VPSC Vault, Process, Structure, Configuration VPT Virtual Print Technology [Dataproducts] VR Virtual Reality + Voltage Regulated/Regulator VRAM Video Random Access Memory VRD Virtual Retinal Display VRE Voltage Regulated Extended VRM Voltage Regulator Module VRML Virtual Reality Modeling Language (originally named Virtual Reality Markup Language) VROOMM Virtual Real-time Object Oriented Memory Manager [Borland] .VRS WordPerfect Graphics Driver (file name extension) VRT Voltage Regulation Technology [Intel] VRU Voice Response Unit VS Virtual Storage VSAM Virtual Storage Access Method VSAT Very Small Aperture Terminal VSE Virtual Storage Extended VSF Vertical Scanning Frequency VSI Virtual Socket Interface VSIO Virtual Serial Input Output VSM Virtual Shared Memory + Virtual Storage Management + Visual System Management [IBM] VSN Volume Serial Number VSOS Virtual Storage Operating System VSYNC Vertical Sync VT Vertical Tab VTAM Virtual Telecommunications Access Method [IBM] VTNS Virtual Telecommunications Network Service VTS Volume Tracking Driver VUI Video User Interface VUP VAX Unit of Performance VWB Visual WorkBench [Microsoft] VWM Virtual Window Manager VXA Variable-Speed Architecture [Ecrix] VxD Virtual Extended Driver [Microsoft] .VXD Virtual Device (file name extension) [Microsoft] V&V Verification and Validation W... W/ With W3 (see WWW) W3A World Wide Web Applets W3C World Wide Web Consortium W4 What-Works-With-What WAAS Wide Area Augmentation System WABI Windows Application Binary Interface [SunSoft] WAI Web Application Interface [Netscape] WAIS Wide Area Information Server WAITI Wait-For-Interrupt WAITS Wide Area Information Transfer System WAN Wide Area Network WAP Wireless Application Protocol WATS Wide Area Telecommunications Service .WAV Waveform Audio (file name extension) WBEM Web-Based Enterprise Management WC Word Count WCS World Coordinate System WDL Windows Driver Library [Microsoft] WDM Wavelength Division Multiplexing + Windows Driver Model [Microsoft] WDRAM Windows Dynamic Random Access Memory .WEB Entities Emphasizing the WWW (Domain Name) [Internet] WebNFS Web Network File System [Sun] WELL Whole Earth 'Lectronic Link (BBS) WFM Wired For Management [Intel] WFW Windows For Workgroups [Microsoft] WGS Work Group System WHAM Waveform Hold and Modify [Microsoft] WHC Workstation Host Connection WIN 9.X Windows95/Windows98 WINDBG Windows Debugger [Microsoft] WINE Windows Emulator WINForum Wireless Information Networks Forum WINS Windows Internet Naming Service [Microsoft] WINSOCK Windows Open Systems Architecture [Microsoft] + Windows Sockets WINWORD Word For Windows [Microsoft] WISE WordPerfect Information System Environment WIT Web Interactive Talk [Internet] .WKB Workbook (file name extension) [WordPerfect] .WKE Worksheet (file name extension) [Lotus 1-2-3] [LDC] .WKQ Spreadsheet (file name extension) [BORQU] .WKS Worksheet (file name extension) [Lotus 1-2-3] [LDC] .WKZ Compressed Spreadsheet (file name extension) [BORQU] .WK1 Worksheet (file name extension) [Lotus 1-2-3] [LDC] WL Word Line .WLG Dr. Watson Log (file name extension) WMC Workflow Management Coalition .WMF Windows Metafile Format (file name extension) [Microsoft] WMRM Write Many, Read Many WNIC Wide-Area Network Interface Co-Processor WNIM Wide-Area Network Interface Module W/O Without WORM Write Once, Read Many WOS Workstation Operating System WOSA Windows Open Services/Systems Architecture [Microsoft] WOW Window On Windows [Microsoft] WP WordPerfect + Word Processing + Write Protected .WPD Windows Printer Description (file name extension) .WPG WordPerfect Graphics (file name extension) WPHD Write-Protect Hard Disk .WPK Keyboard (file name extension) [WordPerfect] WPM Words Per Minute .WPM Macro (file name extension) [WordPerfect] WPOS Workplace Operating System WPS Windows Printing System [Microsoft] + Workplace Shell [OS2] WPVM Windows Parallel Virtual Machine .WQ1 Spreadsheet (file name extension) [BORPQU] .WQ! Compressed Spreadsheet (file name extension) [BORPQU] WRAM Windows Random Access Memory .WRI Write (file name extension) WRK Windows Resource Kit [Microsoft] WS WordStar + Workstation WSAPI Web Site Application Program Interface [O'Reilly] WSH Windows scripting Host [Microsoft] WT Write Through WTM Wired For Management WWIS World Wide Information System [Internet] WWW World-Wide Web [Internet] WYSBYGI What You See Before You Get It WYSIWYG What You See Is What You Get

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