| Acronym | Meaning |
 | MIB | Master Interconnect Board |
| PACS | Pointing And Attitude Control System |
| MA | Metabolic Analyzer |
| N&G | Navigation And Guidance (G&N Preferred) |
| LOR | Lunar Orbit Rendezvous |
| PDS | Problem Data System |
| PLSP | Payload Signal Processor |
| FCMU | Foot Controlled Maneuvering Unit |
| OSC | Oscillator |
| EIA | Electrical Industries Association |
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