| Abbreviation | Definition |
|---|---|
| SCB | String Control Byte |
| SCE | Source Code Extract |
| SCR | Single Call Ring |
| SCRA | Southern Contemporary Rock Assembly |
| SCS | Scalable Command Set |
| SD | Selective Default |
| SDC | Selected Device Clear |
| SDDB | Snap Disk Drive Belt |
| SDF | Stuff Done Flag |
| SDFA | San Diego First Assembly |
| SDL | Software Defined Language |
| SDRSDRAM | Single Data Rate Synchronous Dynamic Random Access Memory |
| SDS | Sample Dump Standard |
| SE | Shift Enhancing |
| SE | Substantially Equal |
| SEE | Binary Painter Operator |
| SEOB | Set Every Other Bit |
| SET | Set Byte on Condition |
| SEU | Source Entry Utility |
| SEW | Store Exclusive White |