A

A/UX OS

AC-3 Coding System

Accelerated Computing 加速運算

Accelerator accelerator

Access.Bus Hardware

ACK Acknowledgement

ACM Association for Computing Machinery

Acoustic Coupler Hardware

ACPI Advanced Configuration and Power Interface

Acronym Acronym

Active Matrix Display Hardware

Active-Matrix Display

ActiveX OLE/COM

Actor Programming

Ad-Hoc 無線網路點對點傳輸模式

Adapter Hardware

ADC Analog-Digital Converter

Add-On Add-On

ADO ActiveX Data Object

ADPCM Adaptive Differential Pulse Code Modulation

ADSL 非對稱數位訂戶迴路

Advance Robotics 先進機器人科學

Adware 廣告軟體

AFC Application Foundation Classes

AGP Accelerated Graphics Port

AIFF Audio Interchange File Format

ALGOL Algorighmic Language

Aliasing Data

ALM 軟體生命周期管理（Application Lifecycle Management）

Altair Computer

AMD Advanced Micro Devices

Amplifier Hardware

AMPS Advanced Mobil Phone System

Analog Analog

Anonymous FTP Internet

Antialiasing Antialiasing

AOL America Online

AP 無線存取設備

API 應用程式介面(Application Programming Interface)

APPC Advanced Program-to-Program Communication

Applescript Macro/Batch File

Applet Program

APS 先進生產規劃與排程 （Advanced Planning and Scheduling）

ARC Compression

ARCnet Attached Resource Computer Network

ARP Address Resolution Protocol

Array Array

AS/400 Minicomputer

ASCII American Standard Code for Information Interchange

ASIC Application Specific Integrated Circuit

ASP 應用服務供應商（Application Service Provider）

ASPI Advanced SCSI Programming Interface

ASR 自動語音辨識技術

Assembly Programming

Asynchronous Communication

AT AT

ATAPI AT Attachment Programming Interface

ATM 非同步傳輸模式

ATX Hardware

AUI Attachment Unit Interface

AutoCAD Software

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AWK Aho