A
- AAT—Average Access Time
- AA—Anti-Aliasing
- AAA—Authentication Authorization, Accounting
- AABB—Axis Aligned Bounding Box
- AAC—Advanced Audio Coding
- AAL—ATM Adaptation Layer
- AALC—ATM Adaptation Layer Connection
- AARP—AppleTalk Address Resolution Protocol
- ABCL—Actor-Based Concurrent Language
- ABI—Application Binary Interface
- ABM—Asynchronous Balanced Mode
- ABR—Area Border Router
- ABR—Auto Baud-Rate detection
- ABR—Available Bitrate
- ABR—Average Bitrate
- AC—Acoustic Coupler
- AC—Alternating Current
- ACD—Automatic Call Distributor
- ACE—Advanced Computing Environment
- ACF NCP—Advanced Communications Function—Network Control Program
- ACID—Atomicity Consistency Isolation Durability
- ACK—ACKnowledgement
- ACK—Amsterdam Compiler Kit
- ACL—Access Control List
- ACL—Active Current Loop
- ACM—Association for Computing Machinery
- ACME—Automated Classification of Medical Entities
- ACP—Airline Control Program
- ACPI—Advanced Configuration and Power Interface
- ACR—Allowed Cell Rate
- ACR—Attenuation to Crosstalk Ratio
- AD—Active Directory
- AD—Administrative Domain
- ADC—Analog-to-Digital Converter
- ADC—Apple Display Connector
- ADB—Apple Desktop Bus
- ADCCP—Advanced Data Communications Control Procedures
- ADO—ActiveX Data Objects
- ADSL—Asymmetric Digital Subscriber Line
- ADT—Abstract Data Type
- AE—Adaptive Equalizer
- AES—Advanced Encryption Standard
- AF—Anisotropic Filtering
- AFP—Apple Filing Protocol
- AGP—Accelerated Graphics Port
- AH—Active Hub
- AI—Artificial Intelligence
- AIX—Advanced Interactive eXecutive
- Ajax—Asynchronous JavaScript and XML
- AL—Active Link
- AL—Access List
- ALAC—Apple Lossless Audio Codec
- ALGOL—Algorithmic Language
- ALSA—Advanced Linux Sound Architecture
- ALU—Arithmetic and Logical Unit
- AM—Active Matrix
- AM—Access Method
- AM—Active Monitor
- AM—Allied Mastercomputer
- AM—Amplitude Modulation
- AMD—Advanced Micro Devices
- AMQP—Advanced Message Queuing Protocol
- AMR—Audio Modem Riser
- ANN—Artificial Neural Network
- ANSI—American National Standards Institute
- ANT—Another Neat Tool
- AoE—ATA over Ethernet
- AOP—Aspect-Oriented Programming
- APCI—Application-Layer Protocol Control Information
- API—Application Programming Interface
- APIC—Advanced Programmable Interrupt Controller
- APIPA—Automatic Private IP Addressing
- APL—A Programming Language
- APR—Apache Portable Runtime
- ARC—Adaptive Replacement Cache
- ARC—Advanced RISC Computing
- ARIN—American Registry for Internet Numbers
- ARM—Advanced RISC Machines
- AROS—AROS Research Operating System
- ARP—Address Resolution Protocol
- ARPA—Address and Routing Parameter Area
- ARPA—Advanced Research Projects Agency
- ARPANET—Advanced Research Projects Agency Network
- AS—Access Server
- ASCII—American Standard Code for Information Interchange
- ASG—Abstract Semantic Graph
- ASIC—Application-Specific Integrated Circuit
- ASIMO–Advanced Step in Innovative Mobility
- ASLR–Address Space Layout Randomization
- ASM—Algorithmic State Machine
- ASMP—Asymmetric Multiprocessing
- ASN.1—Abstract Syntax Notation 1
- ASP—Active Server Pages
- ASP—Application Service Provider
- ASR—Asynchronous Signal Routine
- AST—Abstract Syntax Tree
- ASSP—Application-Specific Standard Product
- AT—Advanced Technology
- AT—Access Time
- AT—Active Terminator
- ATA—Advanced Technology Attachment
- ATAG—Authoring Tool Accessibility Guidelines
- ATAPI—Advanced Technology Attachment Packet Interface
- ATM—Asynchronous Transfer Mode
- AVC—Advanced Video Coding
- AVI—Audio Video Interleaved
- AWK—Aho Weinberger Kernighan
- AWT—Abstract Window Toolkit
Read more about this topic: List Of Computing And IT Abbreviations