| Abbreviation | Definition |
|---|---|
| BDU | Branch Detection Unit |
| BEAST | Belgium Economic Accounting and Surveillance Terminal |
| BEDO | Burst Extended Data Out |
| BEDORAM | Burst Extended Data Out Random Access Memory |
| BETA | Betalight Electromagnetic Technology Applications |
| BF | Boot Floppy |
| BF | Bridging Fault |
| BGCLA | Between Groups Carry Look-Ahead |
| BHA | Bottom Hole Assembly |
| BHM | Binary Hexidecimal Matchup |
| BHS | Behaviours Hardware and Systems |
| BI | Back Illuminated |
| BI | Backplane Interconnect |
| BI | Basic Instrument |
| BI | Bus In |
| BI | Bus Invert |
| BIAMS | Beam Injection Assessment of Microstructures in Semiconductors |
| BIC | Broadband Interface Card |
| BICH | Bio Inspired Cellular Hardware |
| BINAC | BINary Automatic Computer |