| Abbreviation | Definition |
|---|---|
| DASD | Direct Access Storage Device |
| DASP | Dynamic Adaptive Speculative Preprocessor |
| DAT | Disk Access Time |
| DATU | Direct Access Testing Unit |
| DAVE | Dynamic Advanced Version Equipment |
| DAVID | Digital Audio-Video Internet Device |
| DAWH | Door And Window Hardware |
| DB-25 | 25-pin D-SUB (series D subminiature) connector |
| DBA | Direct Bus Access |
| DBC | Data Base Computer |
| DBCE | Dependence Based Checking Elision |
| DBDC | Digital Block Down-Converter |
| DBL | Dura Bright Light |
| dBm | Decibel relative to one milliwatt |
| DBM | Double Balanced Mixer |
| DBO | Develop, Build, Operate |
| DBR | Damaged Beyond Repair |
| DBUS | Data BUS |
| DC | Data Center |
| DC | Direct Coupled |