| A+ Cert. | A + Certified Computer Technician |
| ACPI | Advanced Configuration and Power Interface |
| ADSL | Asymmetric Digital Subscriber Line (Internet Connection) |
| AGP | Accelerated Graphics Port |
| ANSI | American National Standards Institute |
| APM | Advanced Power Management |
| ASCII | American Standard Code for Information Interchange |
| ASD | Automatic Skip Driver (system utility) |
| ASPI | Advanced SCSI Programming Interface |
| AT | Advanced Technology or ATtention (MODEMs) |
| ATA | AT Attachment |
| ATM | Asynchronous Transfer Mode |
| ATX | Advanced Technology Expanded |
| AVI | Audio-Video Interleave |
| . | . |
| BCD | Binary Coded Decimal |
| BEDODRAM | Burst Extended Data Output Dynamic Random Access Memory |
| BIOS | Basic Input/Output System |
| BNC | Bayonette Naur Connector |
| BPS | Bits Per Second |
| BRI | Basic Rate Interface |
| . | . |
| CAV | Constant Angular Velocity |
| CD | Change Directory |
| CD-RW | Compact Disk- Read /Write |
| CD-ROM | Compact Disk- Read Only Memory |
| CDF | Channel Definition Format |
| CGA | Color Graphics Adapter |
| CHAP | Challenge Handshake Authentication Protocol |
| CLV | Constant Linear Velocity |
| CMOS | Complimentary Metal Oxide Semiconductor |
| CMS | Color Matching System |
| CODEC | Compress/Decompress |
| COM | Communications Port (serial) |
| CPGA | Ceramic Pin Grid Array |
| CPU | Central Processing Unit |
| CRC | Cyclic Redundancy Checking |
| CRT | Cathode Ray Tube |
| CSLIP | Compression Serial Line Interface Protocol |
| CVF | Compressed Volume File |
| . | . |
| DAT | Digital Audio Tape |
| DDN | Defense Data Network |
| DDS | Digital Data Storage |
| DDR | Double Data Rate |
| DHCP | Dynamic Host Configuration Protocol (Networks) |
| DIMM | Dual In-line Memory Module |
| DIN | Deutsche Industrie-Norm (German Industrial Standards Authority, equivalent of EIA, BSA etc) |
| DIP | Dual In-line Package |
| DLC | Data Link Control |
| DLL | Dynamic Link Library |
| DMA | Direct Memory Access |
| DMI | Desktop Management Interface |
| DNS | Domain Name Service |
| DOS | Disk Operating System |
| DRAM | Dynamic Random Access Memory |
| DSP | Digital Signal Processor |
| DTL | Diode-Transistor Logic |
| DUN | Dial Up Network |
| DVD | Digital Video Disc or Digital Versatile Disc |
| . | . |
| EBD | Emergency Boot/Startup Diskette |
| EDO DRAM | Extended Data Output Dynamic Random Access Memory |
| EIA | Electrical Industry Association |
| EIDE | Enhanced Integrated Drive Electronics |
| EISA | Extended Industry Standard Architecture |
| EEPROM | Electronically Erasable Programmable Read Only Memory |
| EMI | ElectroMagnetic Interference |
| EMF | Enhanced MetaFile |
| EMS | Expanded Memory |
| EPROM | Electronically Programmable Read Only Memory |
| ERD | Emergency Repair Disk |
| ESD | ElectroStatic Discharge |
| ESDI | Enhanced Small Device Interface |
| . | . |
| FAT16 | 16 bit Version of File Allocation Table |
| FAT32 | 32 bit Version of FAT16 |
| FDDI | Fiber Distributed Data Interface |
| FIFO | First In First Out |
| FPM DRAM | Front Page Mode Dynamic Random Access Memory |
| FRU | Field Replacable Unit |
| FSB | Front Side Bus |
| FTP | File Transfer Protocol |
| . | . |
| GUI | Graphical User Interface |
| . | . |
| HCL | Hardware Compatibility List |
| HTML | Hyper Text Markup Language |
| HTTP | Hyper Text Transfer Protocol |
| . | . |
| IAB | Internet Architecture Board |
| IANA | Internet Assigned Numbers Authority |
| IC | Integrated Circuit |
| IDE | Integrated Drive Electronics |
| IEEE | Institute of Electronic and Electrical Engineers |
| IO | Input/Output |
| IP | Internet Provider |
| IPSEC | Internet Provider Security |
| IPX/SPX | Internet Package Exchange/Sequenced Package Exchange (network) |
| IRQ | Interrupt Request |
| ISA | Industry Standard Architecture |
| ISDN | Integrated Services Digital Network |
| ISO | International Standards Organization |
| ISP | Internet Service Providers |
| ITU | International Telecommunications Union |
| . | . |
| Kb | Kilobyte |
| KHz | KiloHertz |
| . | . |
| LAN | Local Area Network |
| LCD | Liquid Crystal Display |
| LIM | Lotus, Intel and Microsoft |
| LSB | Least Significant Bit |
| LPT | Line PrinTer |
| . | . |
| Mb | MegaByte |
| MBR | Master Boot Record |
| MCA | MicroChannel Architecture |
| MCDBA | Microsoft Certified Data Base Administrator |
| MCI | Media Control Interface |
| MCP | Micosoft Certified Professional |
| MCSE | Microsoft Certified Systems Engineer |
| MCT | Micosoft Certified Trainer |
| MD | Make Directory |
| MDA | Monochrome Display Adapter |
| MDI/(MDI-X) | Media Dependant Interface (With Crossover) |
| MHz | MegaHertz |
| MIME | Multipurpose Internet Mail Extensions |
| MO | Magneto-Optical |
| MODEM | MOdulator/DEModulator |
| MOUS | Microsoft Office User Specialist |
| MSB | Most Significant Bit |
| MSCDEX | MicoSoft CD-ROM EXtensions (drivers for CDs) |
| MS-DOS | MicoSoft Disk Operating System |
| . | . |
| NCP | NetWare Core Protocol |
| NDIS | Network Driver Interface Specification |
| NDS | Netware Directory Services |
| NetBEUI | NetBIOS Extended User Interface |
| NIC | Network Interface Card |
| NOS | Network Operating System |
| NT | Northern Telecom |
| NTFS | Northern Telecom File System |
| NSF | National Science Foundation |
| . | . |
| OCR | Optical Character Recognition |
| ODBC | Open Database Connectivity |
| ODI | Open Datalink Interface |
| OLE | Object Linking and Embedding |
| OHCI | Open Host Controller Interface |
| OS | Operating System |
| . | . |
| PAP | Password Authentication Protocol |
| PBGA | Plastic Ball Grid Array |
| PC | Personal Computer |
| PCI | Peripheral Component Interface |
| PCL | Program Control Language |
| PCMCIA | Personal Computer Memory Card Industry Association |
| PDA | Personal Digital Assistant |
| PDL | Page Description Language |
| PIF | Program Information File |
| PGA | Pin Grid Array |
| PPGA | Plastic Pin Grid Array |
| PPP | Point-to-Point Protocol |
| PPTP | Point-to-Point Tunneling Protocol |
| PnP | Plug and Play |
| POPS | Points of Presence |
| POST | Power On Self Test |
| PPM | Pages Per Minute |
| PPP | Point to Point Protocol |
| PRI | Primary Rate Interface |
| PS/2 | Programming System 2 [IBM] |
| . | . |
| QIC | Quarter Inch Cartridge |
| . | . |
| RAID | Redundant Array of Independent (or Inexpensive) Disks |
| RAM | Random Access Memory |
| RAM-DAC | Random Access Memory- Digital to Analog Converter (Video) |
| RD | Remove Directory |
| RDRAM | Rambus Dynamic Random Access Memory |
| REG | Registry (Windows) |
| ROM | Read Only Memory |
| . | . |
| SAP | Service Advertising Protocol |
| SCSI | Small Computer Systems Interface |
| SEC | Single Edge Connector |
| SECC | Single Edge Contact Cartridge |
| SIMM | Single In-line Memory Module |
| SGRAM | Synchronous Graphics Random Access Memory |
| SPGA | Staggered Pin Grid Array |
| SRAM | Static Random Access Memory (L1 Cache and more)) |
| SDRAM | Synchronous Dynamic Random Access Memory |
| SLDRAM | SyncLink Dynamic Random Access Memory |
| SLIP | Serial Line Interface Protocol |
| SMB | Server Message Block |
| SNMP | Simple Network Management Protocol |
| SPX | Sequenced Packet eXchange |
| SQL | Structured Query Language |
| SSL | Secure Sockets Layer |
| SVGA | Super Video Graphics Adapter |
| . | . |
| TAPI | Telphony Application Program Interface |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TFT | Thin Film Transistor |
| TSR | Terminate and Stay Resident |
| TTL | Transistor-Transistor Logic |
| . | . |
| UART | Universal Asynchronous Receiver/Transmitter |
| UDF | Universal Disk Format |
| UNC | Universal Naming Convention |
| UMA | Upper Memory Area |
| UMB | Upper Memory Blocks |
| UPS | Uninterruptable Power Supply |
| URL | Universal Resource Locator |
| USB | Universal Serial Bus |
| . | . |
| VFAT | Virtual File Allocation Table |
| VGA | Video Graphics Adapter |
| VL-Bus | Vesa Local-Bus |
| VRAM | Video Random Access Memory |
| . | . |
| WAIS | Wide Area Information Server |
| WAN | Wide Area Network |
| WDM | Windows Driver MOdel |
| WINS | Windows Internet Naming Service |
| WLAN | Wireless Local Area Network |
| WORM | Write Once/Read Many |
| WRAM | Window Random Access Memory |
| WWW | World Wide Web |
| . | . |
| XML | eXtensible Markup Language |
| XMS | Extended Memory Specification |
| XT | Extended Technology |
| . | . |