ACID
atomicity, consistency, isolation, durability
ACM
Association for Computing Machinery
AES
Advanced Encryption Standard
API
application programming interface
APPC
Advanced Peer-to-Peer Communication
AS/400
Application System/400
ASCII
American Standard Code for Information Interchange
ASN
Abstract Syntax Notation
ASN.1
ASN 1
ATM
automatic teller machine
AWT
Abstract Windowing Toolkit
AuthML
Authentication Markup Language
