short form of computer terms: Full Forms starting with A. AAC: Advanced Audio Coding. ABI: Application Binary Interface. ABR: Available Bit Rate. AD: Active Directory. ADC: Analog – to – Digital Converter / Apple Display Connector (DVI Variant). AHA: Accelerated Hub Architecture. ALGOL: Algorithmic Language. AJAX: Asynchronous JavaScript and XML. ALU: Arithmetic Logical Unit. AMD: Advanced Micro Devices. AMR: Audio Modern Riser. APCI: Application – Layer Protocol Control Information. API: Application Programming Interface. ARPANET: Advanced Research Projects Agency Network. ASCII: American Standard Code for Information Interchange. ASP: Application Service Provider / Active Server Pages. AST: Abstract Syntax Tree. ATA: Advanced Technology Attachment. ATM: Asynchronous Transfer Mode. AVC: Advanced Video Coding. AVI: Audio Video InterLeaved. AWT: Abstract WIndow ToolKit.