| Abbreviation | Definition |
|---|---|
| SHARC | Super HAward ARChitecture |
| SHD | Super High Definition |
| SHL | System Hazard List |
| SHP | Standard Hardware Program |
| SHS | Spokane Hardware Supply |
| SHUD | Statistics Heads Up Display |
| SI | Small Interface |
| SI | Socket Interface |
| SIAS | Standard Intel Architecture Server |
| SIC | Simplified Instructional Computer |
| SIC | Supply Installation and Commissioning |
| SID | System IDentifier |
| SIDA | Secure Identification Display Area |
| SIG | Single Input Graphics |
| SIM | Scan Image Mode |
| SIM | Single Inline Memory |
| SIM | Sub-Instrument Module |
| SIM | Support Interface Module |
| SIM | System Insight Manager |
| SIMD | Single Instruction Multiple Data |