| Acronym | Meaning |
| DC | Digital Command Assembly |
| SMTAS | Shuttle Model Test And Analysis System |
| TASPR | TATITotal Air TemPerature Indicator |
| EM | Exception Monitor |
| HSF | Hypergot Servicing Facility |
| ISI | Initial Systems Installation |
| DEU | Display Electronic(s) Unit |
| T. | B.Toggle Buffer |
| ESA | ExPlosive Safe Area |
| KCS | Keyboard Configuration Studies |