The definitions of many other acronyms can be found here and at the Free On-Line Dictionary of Computing.
ACM: Association of Computing Machinery
ATA: Advanced Technology Attachment interface with extensions (referring to a disk drive interface standard)
CD: Compact Disc
CPU: Central Processing Unit
DDR: Double Data Rate (referring to the transfer rate of computer memory)
DRAM: Dynamic RAM (Random Access Memory)
DVD: Digital Versatile Disc
ETLA: (see MLA, SFLA, TLA, and YABA) Extended Three-Letter Acronym (four or more letters)
FTP: File Transfer Protocol
GIF: Graphics Interchange Format
HTTP: HyperText Transfer Protocol
IBM: International Business Machines
IDE: Interactive (or Integrated) Development Environment
IMAP: Internet Message Access Protocol
IP: (see TCP) Internet Protocol. A connection-less and best-efforts protocol to transmit data.
JPG or JPEG: (refers to a digital format for representing images) Joint Photographic Experts Group
LCD: Liquid Crystal Display
MLA: (see ETLA, SFLA, TLA, and YABA) Multi-Letter Acronym
MP3: Moving Pictures experts group 1 layer 3
MPG or MPEG: (refers to a digital format for representing movies) Moving Pictures Experts Group
NNTP: Network News Transfer Protocol
PCI: Peripheral Component Interconnect
PNG: Portable Network Graphics
POP: (see IMAP) Post Office Protocol
RAM: Random Access Memory
ROM: Read-Only Memory
RPM: Revolutions Per Minute (when referring to the rotational speed of a disk drive) or Redhat Package Manager (when referring to a standard software package distribution format for Linux computer systems)
SDRAM: Synchronous DRAM (Dynamic Random Access Memory)
Seek time: The average amount of time a disk drive to move a read/write head to a particular track on a disk.
SFLA: (see ETLA, TLA, and YABA) Stupid Four-Letter Acronym
SMTP: Simple Mail Transfer Protocol
SSL: (see TLS) Secure Sockets Layer
TCP: Transmission Control Protocol. A connection-oriented protocol designed to reliably transmit data. Most commonly implemented as TCP/IP (TCP over IP).
TLA: (see ETLA, SFLA, and YABA) Three-Letter Acronym
TLS: (see SSL) Transport Layer Security
YABA: (see ETLA, SFLA, and TLA) Yet Another Bloody Acronym
