1. AAC: Advanced Audio Coding.
  2. ABI: Application Binary Interface.
  3. AHA: Accelerated Hub Architecture.
  4. ALGOL: Algorithmic Language.
  5. AJAX: Asynchronous JavaScript and XML.
  6. ABR: Available Bit Rate.
  7. AD: Active Directory.
  8. ADC: Analog – to – Digital Converter / Apple Display Connector (DVI Variant).
  9. ALU: Arithmetic Logical Unit.
  10. AMD: Advanced Micro Devices.
  11. AMR: Audio Modern Riser.
  12. APCI: Application – Layer Protocol Control Information.
  13. ASP: Application Service Provider / Active Server Pages.
  14. AST: Abstract Syntax Tree.
  15. ATA: Advanced Technology Attachment.
  16. API: Application Programming Interface.
  17. AVC: Advanced Video Coding.
  18. AVI: Audio Video Interleaved.
  19. AWT: Abstract Window ToolKit.
  20. ARPANET: Advanced Research Projects Agency Network.
  21. ASCII: American Standard Code for Information Interchange.
  22. ATM: Asynchronous Transfer Mode.