A

A-D ---> Analog to Digital
AA ---> Author's Alteration
AA ---> Auto Answer
AAL5 ---> ATM Adaption Layer 5
ABEND---> Abnormal End
ABI ---> Application Binary Interface
ABR ---> Available Bit Rate
AC97 ---> Audio Codec 97
ACB ---> Access method Control Block
ACDS ---> Active Control Data Set
ACE ---> Asynchronous Communications Element
ACF ---> Advanced Communication Facility
ACIA ---> Asynchronous Communications Interface Adapter
ACK ---> Acknowledge
ACS ---> Asynchronous Connection Server
ACS ---> Automatic Class Selection
ACSE ---> Application Control Service Element
ACT ---> Application Control Table
ACU ---> Automatic Calling Unit
ADC ---> Analog Digital Converter
ADDMD---> Administrative Directory Management Domain
ADMD ---> Administrative Management Domain
ADO ---> ActiveX Data Object
ADSL ---> Asymetric Digital Subscriber Line
AEA ---> Activity End Acknowledge
AEI ---> Application Entity Invocation
AF ---> Application Framework
AFP ---> Advanced Function Printing
AGP ---> Accellerated Graphics Port
AGS ---> Advanced Graphics System
AI ---> Artificial Intelligence
AIU ---> Application Interface Unit
AIX ---> Advanced Interactive eXecutive
AIX ---> Alternate IndeX
ALGOL---> ALGOrithmic Language
ALS ---> Application Layer Structure
ALS ---> Automatic Line Switching
ALT ---> Application Load Table
ALU ---> Arithmetic and Logic Unit
AM ---> Access Method
AMH ---> Automated Material Handling
AMI ---> Alternate Mark Inversion
AMIS ---> Audio Messaging Interchange Specification
AMR ---> Audio Modem Riser
AMS ---> Access Method Services
ANR ---> Automatic Network Routing
ANS ---> Advanced Network Services
ANSI ---> American National Standards Institute
AOCE ---> Apple Open Collaboration Environment
AOW ---> Asian and Oceanic Workshop for open systems
AP ---> Access Point
AP ---> Automation Protocol
APA ---> All Points Addressable
APDU---> Application Protocol Data Unit
API ---> Application Programming Interface
APIA---> API Association
APL ---> A Programming Language
APPC ---> Advanced Program-to-Program Communication
APPI---> Advanced Peer-to-Peer Internetwork(ing)
APPN ---> Advanced Peer-to-Peer Network(ing)
APS ---> Advanced Production System
AR ---> Attention Routine
ARP ---> Address Resolution Protocol
ARPA ---> Advanced Research Projects Agency
ARPANET---> Advanced Research Projects Agency Network
ARU ---> Audio Response Unit
AS ---> Activity Start
AS ---> Autonomous System
ASC ---> Accredited Standards Committee
ASCII---> American Standard Code for Information Interchange
ASE ---> Application Service Element
ASIC ---> Application-Specific Integrated Circuit
ASN ---> Abstract Syntax Notation
ASN.1 ---> Abstract Syntax Notation One
ASO ---> Application Service Object
ASP ---> Active Server Pages
ASR ---> Automatic Speech Recognition
ASTs ---> Asynchronous System Traps
AT ---> Advanced Technology
ATM ---> Adobe Type Manager
ATM ---> Asynchronous Transfer Mode
ATM ---> Automatic Teller Machine
ATMP ---> Ascend Tunnel Management Protocol
ATSF ---> Alert Transport Service Facility
AU ---> Access Unit
AVR ---> Automatic Volume Recognition
AWG ---> American Wire Gauge