英语缩略语词汇

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