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During the landing of Apollo 11, the eagle flashed up both a 1202 and a 1201 alarm. These alarms mean that the computer was being overloaded, and was deciding not to finish doing some of the less important tasks it was asked to do. They later found out that Buzz Aldrin had turned the rendezvous radar on just in case they had to abort the landing, so they could easily navigate back to the Command Module, Columbia. This was not in the procedure, therefore the alarms went off.

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