ARAS - Appletalk Remote Access Services

ARCA - Advanced RISC Computing Architecture

ARCM - Adaptation Rate Coding Modulation

ARCnet - Attached Resource Computer Network

ARCS - Advanced RISC Computing Specification

ARD - Automatic Relevance Determination

ARE - Asymptotic Relative Efficiency

ARI - Abort Retry Ignore

ARL - Adjusted Ring Length

ARLL - Advanced Run - Length Limited

ARM - Advanced RISC Machine

ARM - Asynchronous Response Mode

ARM - Annotated Reference Manual

ARMA - Autoregressive Moving Average

ARP - Address Resolution Protocol

ARPA - Advanced Research Project Agency

ARPANET - Advanced Research Projects Agency Network

ARPL - Adjust Requested Privilege Level

ARQ - Automatic Repeat Request

ARRA - Announced Retransmission Random Access

ARS - Assemble Requirement Specification

ART - Adaptive Resonance Theory

ART - Advanced Recognition Technologies

ARTA - Apple Real Time Architecture

ARTIC - A Real - Time Interface Coprocessor