CDMA – Code Division Multiple Access

GSM – Global System for Mobile Communication

TDMA – Time Division Multiple Access

PC – Personal Computer

RAM – Random Access Memory

CPU – Central Processing Unit

WWW – World Wide Web

UPS – Uninterruptible Power Supply

LAN – Local Area Network

WAN – Wide Area Network

MAN – Metropolitan Area Network

TCP/IP – Transmission Control Protocol/Internet Protocol

DOS – Disk Operating System

ROM – Read Only Memory

PROM – Programmable Read Only Memory

HTML – Hyper Text Markup Language

HTTP – Hyper Text Transfer Protocol

FTP – File Transfer Protocol

ATM – Automatic Teller Machines