d
- Daemon
- Data Bus
- Data Integrity
- Data Normalisation
- Data Path
- Data Structure
- Data Type
- Database
- Deadlock
- Debugging
- Desktop Environment
- Device Driver
- Device Enumeration
- Device Firmware
- Device Manager
- Digital Signature
- Direct Memory Access
- Directory
- Disk Cache
- Disk Partition
- Distributed System
- DNS
- DNS Resolution
- Driver
- Driver Abstraction
- DVD
- Dynamic Typing