A..

• AA Auto Answer
• AAA Authentication, Authorization and Accounting
• AAB All-to-All Broadcast
• AAL Asynchronous Transfer Mode Adaption Layer
• AAM Automatic Acoustic Management
• 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]
• .ABA Address Book Archive (file name extension) [Palm]
• 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
• ABM Asynchronous Balanced Mode
• ABR Available Bit Rate
• ABRD Automatic Baud Rate Detection
• 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 + Asynchronous Connection-Less (link)
• 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 Desktop Bus
• ADC Adaptive Data Compression (protocol) [Hayes] + Add with Carry + Analog to Digital Converter
• ADCCP Advanced Data Communication Control Procedures/Protocol
• 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 ActiveX Data Objects
• ADP AOLserver Dynamic Pages + 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 (See DSL)
• 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
• .AERO Aviation Industry (Domain Name) [Internet]
• AES Advanced Encryption Standard
• AESA ATM End System Address
• AF Auxiliary carry Flag
• AFA Accelerated File Access
• AFC Antiferro-Magnetically Coupled (media) [IBM] + 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 Advanced/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
• AH Authentication Header (protocol)
• AHS Automated Highway Systems
• AI Analog Input + Artificial Intelligence
• AIA Applications Integration Architecture [DEC]
• AIC AIXwindows Interface Composer [IBM]
• AIFF Audio Interchange File Format
• AIIM Association for Information and Image Management
• AIM AOL Instant Messenger
• AIN Advanced Intelligent Network [Bell Atlantic]
• AIP Application Infrastruture Provider
• 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]
• ALAT Advanced Load Address Table
• 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
• kALICE Artificial Linguistic Internet Computer Entity
• ALINK Active Link [HTML]
• ALIWEB Archie Like Indexing in the Web [Internet]
• ALN Asynchronous Learning Network
• ALP Automatic Language Processing
• 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. + Application Messaging Interface
• AMMA Advanced Memory Management Architecture
• [Everex Systems]
• AMPS Advanced Mobile Phone Service
• AMR Audio Modem Riser
• 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
• ARS Activity Reporting System [Unisys]
• 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
• ASD Application Structure Database [Microsoft] + Automatic Skip Driver [Microsoft]
• 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 + Aspect Oriented Programming + 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
• ATC Advanced Transfer Cache
• 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]
• AVL AVL Tree (named after its founders:
• Adelson, Veiskii and Landis
• AVP Attribute-Value Pair
• AVR Automatic Voice Recognition
• AVT Applied Voice Technology
• AVVID Architecture for Voice Video & Integrated Data [Cisco]
• 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