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Letter A

A/D Analog to Digital
A/P Accounts Payable
A/R Accounts Receivable
A/S/L Age/Sex/Location
AAB All-to-All Broadcast
AAL Asynchronous Transfer Mode Adaption Layer
AAP Applications Access Point
AASP ASCII Asynchronous Support Package
AAS All-to-All Scatter
AAT Average Access Time
AA Auto Answer
ABEND Abnormal End
ABIST Automatic Built-In Self-Test
ABI Application Binary Interface
ABLE Adaptive Battery Life Extender
ABRS Automated Book Request System
ABR Available Bit Rate
ABS Address Book Synchronization
ABTS ASCII Block Terminal Services
ABT Abort
ACAP Application Configuration Access Protocol
ACC Accumulator
ACDI Asynchronous Communications Device Interface
ACD Automatic Call Distribution
ACE Access Control Encryption/Entry
Advanced Computing Environment
Adverse Channel Enhancements
* 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
ACMS Application Control Management System
ACM Association for Computing Machinery Audio Compression Manager
ACPI Advanced Configuration and Power Interface
ACP Ancillary Control Program
Auxiliary Control Process
ACROSS Automated Cargo Release and Operations Service System
ACR Allowed Cell Rate
ACS Access
Access Control Set
Access Control System
* Advanced Computer System
Anti Curl System
Asynchronous Communication Server
ACTS Automated Computer Time Service
ACTT Advanced Communication and Timekeeping Technology
ACU Automatic Calling Unit
ACVC Ada Compiler Validation Capacity
AC Autocheck
Automatic Computer
Alternating Current
ADA Automatic Data Acquisitions
(Programming Language named after Augusta Ada Lovelace)
ADB Apple Desktop Bus
ADCCP Advanced Data Communication Control Procedures
ADC Adaptive Data Compression (protocol)
Add with Carry
Analog to Digital Converter
ADD Automatic Document Detection
ADF Automatic Document Feeder
Automatically Defined Function
ADI AutoCad/AutoDesk Device Interface (driver)
ADLAT Adaptive Lattice Filter
ADLC Adaptive Lossless Data Compression
Asynchronous Data Link Control
ADL Address Data Latch
ADMACS Apple Document Management And Conrol System
ADMD Administrative Management Domain
ADO Active Data Objects
ADPCM Adaptive Differential Pulse Code Modulation
ADP Automatic Data Processing
ADR Address
ADSC Address Status Changed
Adobe Document Structuring Conventions
ADSI Active Directory Service Interface
Analog Display Services Interface
ADSL Asymmetric Digital Subscriber Line
ADSP Apple Datastream Protocol
ADSR Attack, Decay, Sustain, Release
ADS Application Development Solutions
Application Development System
Automatic Distribution System
ADT Abstract Data Type
Application Data Types
ADU Automatic Dialing Unit
AEB Analog Expansion Bus
AEC Architecture, Engineering, Construction
AESA ATM End System Address
AES Advanced Encryption Standard
AE Above or Equal
AFAIC: As Far As I'm Concerned
AFAIK As Far As I Know
AFAIK As Far As I Know -- A not too common admission that one is not omniscient.
AFAYC As Far As You're Concerned
AFA Accelerated File Access
AFC Automatic Font Change
Automatic Frequency Control
AFDW Active Framework for Data Warehousing
AFD Automatic File Distribution
AFII Association for Font Information Interchange
AFIRM Automated Fingerprint Image Reporting and Match
AFIS Automated Fingerprint Identification System
AFI Authority and Format Identifier
AFK Away From Keyboard
AFK Away from Keyboard -- This is used typically when one is going to be away from the keyboard or otherwise un-responsive for awhile. This lets your friends know that your soon to be occuring lack of responsiveness should not be taken personally.
AFP Advanced Function Presentation
Appletalk Filing Protocol
AFS Andrew File System (protocols)
AFTP Anonymous File Transfer Protocol
AF Auxiliary carry Flag
AGA Advanced Graphics Adapter
AGC Automatic Gain Control
AGP Accelerated/Advanced Graphics Port
AGRAS Antiglare-Antireflective-Antistatic
AGRA Association of Genealogists and Record Agents -- Genealogy Term see UK Genealogy Common Acronyms & Jargon for more information.
AGU Address-Generation Unit
AHD Alaska-Hawaii Daylight
AHS Alaska-Hawaii Standard
AIA Applications Integration Architecture
AIC AIXwindows Interface Composer
AIF Audio Interchange Format
AIIM Association for Information and Image Management
AIN Advanced Intelligent Network
AIR Architecture Implementation Review
AISB Association of Imaging Service Bureaus
AISI As I See It
AISP Association of Information Systems Professionals
AIS Automated Identification System
Automated Information Systems
AIT Advanced Intelligent Tape (drive)
AIX Advanced Interactive Executive
AI Analog Input
Artificial Intelligence
AKA Also Known As
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
ALIWEB Archie Like Indexing in the Web
ALN Asynchronous Learning Network
ALO At Least Once
ALR Advanced Logic Research, Inc.
ALT. Alternate lifestyle
ALT Alternate (mode)
ALU Arithmetic Logic Unit
AMANDDA Automated Messaging and Directory Assistance
AMA Automatic Message Accounting
AMBW All My Best Wishes
AMD Active Matrix Display
Advanced Micro Devices, Inc.
AMIGA A Merely Insignificant Game Addiction
AMI Alternate Mark Inversion
American Megatrends, Inc.
AMMA Advanced Memory Management Architecture
AMPS Advanced Mobile Phone Service
ANCOVA Analysis of Covariance
ANDF Architecture-Neutral Distribution Format
ANI Automatic Number Identification
ANN Artificial Neural Network
ANOVA Analysis Of Variance
ANSI American National Standards Institute
ANX Automotive Network Exchange
AO/DI Always On/Dynamic ISDN
AOCE Apple Open Collaboration Environment
AOE Application Operating Environment
AOL America Online
Always off line or All On Lagging
AOS Add Or Subtract
AO Analog Output
APAREN Address Parity Enable
APAR Authorized Program Analysis Report
APA Adaptive Packet Assembly
All Points Addressable
Arithmetic Processing Accelerator
APCUG Association of PC User Groups
APDU Application Protocol Data Units
APIC Advanced Programmable Interrupt Controller (bus) ]
APIS Advanced Passenger Information System
API Application Program Interface
APL A Programming Language (Mathematics)
APM Advanced Power Management
APNIC Asia-Pacific Network Information Center
APOP Authenticated Post Office Protocol
APPC Advanced Program-to-Program Communications
APPI Advanced Peer-to-Peer Internetworking
APPLETS Applications
APPLE Arrogance Produces Profit-Losing Entity
APPN Advanced Peer-to-Peer Networking
APPS Applications
APRP Adaptive Pattern Recognition Processing
APSE ADA Programming Support Environment
APS Advanced Photo System
Advanced Printing Service Asynchronous Protocol Specification
APT Address Pass Through
Advanced Parallel Technology
Automatically Programmed Tools
AP Adjunct Processor
Application Processor
ARAG Antireflective-Antiglare
ARAS Antireflective-Antistatic
ARA AppleTalk Remote Access
ARCA Advanced RISC Computing Architecture
ARCnet Attached Resource Computer Network
ARLL Advanced Run Length Limited
ARL Adjusted Ring Length
ARMA Association of Records Managers and Administrators
ARM Advanced RISC Machine (processor)
Annotated Reference Manual
Asynchronous Response Mode
ARPANET Advanced Research Projects Agency Network
ARPAnet Advanced Research Projects Agency Network Not really necessary for the standard newbie. But you will see reference to it in historical documents and other references. Originally started in 1969 by the Defence Advanced Research Projects Agency (DARPA), the net consisted of just 4 computers linked together from different sites to exchange military research information. By 1972, the DARPANET had become the ARPANET and consisted of 37 computers. In 1983, MILNET was set up for the exclusive use of thARPL|&|Adjust Requested Privilege Level
ARP Address Resolution Protocol
ARQ Automatic Repeat Request
ARTA Apple Real Time Architecture
ARTIC A Real-Time Interface Coprocessor
ARTS Asynchronous Remote Takeover Server
ARTT Asynchronous Remote Takeover Terminal
ARU Audio Response Unit
AS/400 Application System/400
AS/U Advanced Server for Unix
AS3AP ANSI SQL Standard Scalable and Portable
ASAI Adjunct Switch Application Interface
ASAP As Soon As Possible
ASAP As Soon As Possible
Automatic Switching And Processing
ASCC Automatic Sequence Controlled Calculator
ASCII American Standard Code for Information Interchange Association ASCII is also used as a synonym for TXT style format document. TXT documents can be imported into almost every wordprocessor program on the planet. A very universal format for documents. Problem is: no layout or markup is allowed. For that the RTF (Rich Text Format) is slightly better. This is an ASCII document with special markup codes which tell the word processor how to make paragraphs, indentation, type changes, etc.
ASF Active/Advanced Streaming Format
ASIC Application-Specific Integrated Circuit
ASIT Advanced Security and Identification Technology
ASLM Apple Shared Library Manager
ASL Adaptive Speed Levelling
ASMP Asymmetric Multprocessing
ASN Abstract Syntax Notation
Autonomous System Number
ASO Automated Systems Operations
ASPI Advanced SCSI Programming Interface
ASPS Advanced Signal Processing System
ASP Active Server Page
Authorized Service Provider
Association of Shareware Professionals
ASR Address Space Register
Automatic Send-Receive
Automatic Speech Recognition
AST - Atlantic Standard Time -4:00
AST AST Research, Inc. (named from first initials of the founders: Albert Wong, Safi Qureshey, Thomas Yuen)
ASYNC Asynchronous
AS Autonomous System
AT&T American Telephone and Telegraph
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
Asynchronous Transfer Mode
Automated Teller Machine
ATPS AppleTalk Printing Services
ATR Automatic Terminal Recognition
ATS Administrative Terminal System
Apple Terminal Services
ATTN Attention
ATTRIB Attribute (also ATR)
ATX Advanced Technology Extended ]
ATZ Attention Restore configuration profile from nonvolatile RAM (Modem command)
AT - Azores Time -2:00
Advanced Technology
AUDIT Automated Data Input Terminal
AUI Attachment/Autonomous Unit Interface
AUP Acceptable Use Policy
AUTOEXEC Automatic Execution
AUTO Automatic
AUX Auxiliary
(First Serial Port)
AVA Audio Visual Authoring
AVC Audio Visual Connection
AVD Alternating Voice and Data
AVG Average
AVI Audio Visual Interleave
AVR Automatic Voice Recognition
AVT Applied Voice Technology
AV Audio/Video
Authenticity Verification
AWE Advanced Wave Effects
AWG American Wire Gage
AWK (Unix language named after its authors... Al Aho, Peter Weinberger and Brian Kernighan)
AWS Advanced Workstations and Systems (group)
AWT Abstract Window Toolkit
AX Architecture Extended
Automatic Transmission
AYSOS Are You Stupid Or Something