Ancient Web: Don Eyles Explains What the Apollo 11 Computer

Apollo programmer Don Eyles's long technical paper explains the Lunar Module guidance computer from the inside, including the 1201/1202 alarms, software restarts, throttle instability, and the tiny memory budget that still landed astronauts on the Moon.

https://switchboardtechservices.com/articles/ancient-web-don-eyles-explains-what-the-apollo-11-computer-alarms-actually-meant/

By Switchboard Tech Services · Originally published 2026-07-24

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