A20
 ABIOS
 API
 APL
 ASCIZ
 AVATAR
 BASIC
 BCD
 Big-Endian
 BIOS
 BIOS Parameter Block
 Boot
 Boot Drive
 BPB
 Breakpoint
 Cache
 Callback
 Callout
 CAS
 CBIOS
 CDS
 CGA
 Clock Tick
 CMOS
 Communicating Applications Specification
 CP/M
 CP/M-86
 CPU
 Current Directory Structure
 Cylinder
 DAC
 DCC
 Delayed Write
 Device Driver
 Device Driver Request Header
 DGIS
 Direct Memory Access
 Disk Transfer Address
 DLL
 DMA
 DOS Extender
 DOS Parameter List
 DOS Protected-Mode Interface
 DPB
 DPL
 DPMI
 Drive Parameter Block
 DTA
 DWORD
 Dynamic Link Library
 EGA
 EISA
 EMS
 EOI
 Expanded Memory Specification
 Extended BIOS Data Area
 Extended Memory
 Extended Memory Specification
 External Device Interface
 FAT
 FCB
 File Allocation Table
 File Control Block
 File Handle
 Flush
 FM
 Formatting
 FOSSIL
 FTP
 Handle
 HGC
 High Memory Area
 HMA
 IFS
 Installable File System
 IPX
 IRQ
 ISA
 JFT
 Job File Table
 List of Lists
 Little-Endian
 LPT
 MCB
 MDA
 Memory Control Block
 MFM
 Mickey
 Multitasking
 MZ
 NCB
 NetBIOS
 Network Control Block
 Network Redirector
 Network Shell
 NMI
 Non-Maskable Interrupt
 Non-Volatile RAM
 NVRAM
 Open File Table
 Park
 Pel
 Pixel
 Post
 POST
 Power-On Self-Test
 Program Segment Prefix
 Protected Mode
 PSP
 PWORD
 QWORD
 Real Mode
 Redirector Interface
 RGB
 RLL
 SDA
 Sector
 SFT
 SVGA
 Swappable Data Area
 System File Table
 TSR
 Track
 UMB
 UNC
 Upper Memory Block
 V86
 VCPI
 VDM
 VDS
 VESA
 VGA
 Virtual-86 Mode
 Virtual Control Program Interface
 Virtual DMA Specification
 Virtual DOS Machine
 Virtual Machine
 VM
 VxD
 XBDA
 XDI
 XMS
 YUV