| Acronym | Meaning |
 | PRT | Platinum Resistance Thermometer |
| DMA | Directory Of Military Application |
| O AND M | Operations And Maintenance |
| BSR | Bus Select Relay |
| MASSCOMP | Massachusetts Computer Corporation |
| HEAO | High Energy Astronomy Observatory |
| B | Bit |
| ACE-1 | Aerosol Characterization Experiment |
| A/D | Analog-to-digital |
| CALTECH | California Institute Of Technology |
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