During Apollo 11’s final descent, the guidance computer flashed 1201 and 1202 alarms as it ran out of processing capacity — then repeatedly rebooted, discarded low-priority work and kept steering the lunar module towards the surface

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Five computer-overload alarms interrupted Apollo 11’s powered descent on 20 July 1969. Four carried the code 1202 and one carried 1201. Each meant that Eagle’s guidance computer had been asked to schedule more work than its small supply of temporary working areas could support. The computer responded by entering a software restart, clearing unfinished and [...] The post During Apollo 11’s final descent, the guidance computer flashed 1201 and 1202 alarms as it ran out of processing capacity — then repeatedly rebooted, discarded low-priority work and kept steering the lunar module towards the surface appeared first on Space Daily .