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2026-03-29 17:10:28 UTC
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Ken Shirriff on Nostr: In 1991, the Space Shuttle upgraded its computer to the AP-101S, replacing two ...

In 1991, the Space Shuttle upgraded its computer to the AP-101S, replacing two 60-pound boxes with one box. Since there were five computers on the Shuttle, this change freed up 300 pounds for additional cargo. The CPU was implemented in three boards full of chips, one below. These boards were much larger than the earlier 4 Pi boards.