| Acronym | Meaning |
 | GPS | Ground Processing Simulation |
| MEIU | Main Engine Interface Unit |
| CICU | Computer Interface Conditioning Unit |
| T. | B.Toggle Buffer |
| SCC | Safety Control Center |
| PERT | Program Evaluation Review Technique |
| FCOS | Flight Computer Operating System |
| CCD | Constants Change Display |
| SAMSO | Space And Missile SYstems Organization (USAF) |
| LSFE | Life Sciences Flight Experiment |
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