| AC | Alternating current |
| AGP | Accelerated Graphics Port |
| ALU | Arithmetic logic unit |
| ANSI | American National Standards Institute |
| ASCII | American Standard Code for Information Interchange |
| ASPI | Advanced SCSI Programming Interface |
| BBS | Bulletin board system |
| BIOS | Basic input/output system |
| BPS (bps) | Bits per second |
| CAM | Common Access Method |
| CCITT | Comité Consultatif International Téléphonique et Télégraphique |
| CD-ROM | Compact disc read-only memory |
| CGA | Color/Graphics Adapter |
| CHS | Cylinder head sector |
| CISC | Complex instruction set computing |
| CMOS | Complementary metal-oxide semiconductor |
| COM port | Serial communications port |
| CPU | Central processing unit |
| CRT | Cathode-ray tube |
| DC | Direct current |
| DDE | Dynamic Data Exchange |
| DIMM | Dual inline memory module |
| DIPP | Dual inline pin package |
| DLL | Dynamic link library |
| DMA | Direct memory access |
| DOS | Disk operating system |
| dpi | Dots per inch |
| DPMI | MS-DOS Protected Mode Interface |
| DPMS | Display Power Management Signaling |
| DRAM | Dynamic random access memory |
| DTE | Data Terminal Equipment |
| DVD | Digital video disc |
| EDB | External data bus |
| EDO | Extended data out |
| EGA | Enhanced Graphics Adapter |
| EIDE | Enhanced Integrated Drive Electronics |
| EISA | Extended Industry Standard Architecture |
| EMI | Electromagnetic interference |
| EMS | Expanded Memory Specification |
| ESD | Electrostatic discharge |
| ESDI | Enhanced Small Device Interface |
| ETX | End-of-text |
| FAT | File allocation table |
| FPM | Fast-page mode |
| FTP | File Transfer Protocol |
| GB | Gigabyte |
| GDI | Graphical Device Interface |
| GPF | General Protection Fault |
| GUI | Graphical user interface |
| HMA | High memory area |
| HRR | Horizontal refresh rate |
| HTTP | HyperText Transfer Protocol |
| I/O | Input/output |
| IDE | Integrated Drive Electronics or Integrated Device Electronics |
| IEEE | Institute of Electrical and Electronics Engineers |
| IOR | Input/output read wire |
| IOW | Input/output write wire |
| IP | Internet Protocol |
| IPX/SPX | Internetwork Packet Exchange/Sequenced Packet Exchange |
| IRQ | Interrupt request |
| ISA | Industry Standard Architecture |
| ISDN | Integrated Services Digital Network |
| ISO | International Organization for Standardization (often incorrectly identified as International Standardization Organization) |
| ISP | Internet service provider |
| ITU-T | International Telecommunications Union-Telecommunication Standardization Sector |
| KB | Kilobyte |
| LAN | Local area network |
| LBA | Logical Block Addressing |
| LIM | Lotus/Intel/Microsoft |
| LPT | Line printer |
| MB | Megabyte |
| MCA | Micro Channel Architecture |
| MCC | Memory controller chip |
| MDA | Monochrome Display Adapter |
| MDRAM | Multibank DRAM |
| MFM | Modified frequency modulation |
| MHz | Megahertz |
| MOS | Metal-oxide semiconductor |
| MSD | Microsoft Diagnostics |
| MTBF | Mean time between failures |
| NDIS | Network Driver Interface Specification |
| NetBIOS/NetBEUI | Networked Basic Input/Output System/NetBIOS Enhanced User Interface |
| NIC | Network interface card |
| NTSC | National Television Standards Committee |
| OLE | Object linking and embedding |
| PC | Personal Computer |
| PCI | Peripheral Component Interconnect |
| PDI | Post DMA-IRQ card |
| PDL | Page-description language |
| PGA | Pin grid array or Professional Graphics Adapter |
| PIO | Programmed Input/Output |
| PLCC | Plastic leadless chip carrier |
| PM | Preventive maintenance |
| POST | Power-on self test |
| POTS | Plain Old Telephone Service |
| PPP | Point-to-Point Protocol |
| PPTP | Point-to-Point Tunneling Protocol |
| PQFP | Plastic Quad Flat Pack |
| RAID | Redundant array of independent disks |
| RAM | Random access memory |
| RISC | Reduced Instruction Set Computing |
| RLL | Run-length limited |
| ROM | Read-only memory |
| SCSI | Small Computer System Interface |
| SDRAM | Synchronous dynamic random access memory |
| SGRAM | Synchronous Graphics RAM |
| SIMM | Single inline memory module |
| SIPP | Single inline pin package |
| SMM | System Management Mode |
| SPA | Software Publishers Association |
| SRAM | Static random access memory |
| TB | Terabyte |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TSR | Terminate-and-stay-resident program |
| UART | Universal asynchronous receiver-transmitter |
| UMB | Upper memory block |
| UPS | Uninterruptible power supply |
| USB | Universal serial bus |
| VESA | Video Electronics Standards Association |
| VGA | Video Graphics Adapter |
| VLB | VESA local bus |
| VOM | Volt ohm meter |
| VPN | Virtual private network |
| VRR | Vertical refresh rate |
| WAN | Wide area network |
| WRAM | Window random access memory |
| XMS | Extended memory specification |
| ZIF | Zero insertion force |
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