The Space Shuttle uses five General Purpose Computers (GPC) to operate. These computers share tasks such that the critical ones are shared by 2 or 3 GPC's. The actual computers are IBM AP-101's. The original cost for each of these units was $1.2 million. Four of the GPC's on a vehicle were IBM supplied and either Rockwell or Boeing supplied the 5th GPC. The 5th was purposely contracted to another vendor to minimize the likelihood of a systemic design failure.

One of these computers, serial number 202, now makes its home in Columbus, GA and will be part of the outreach efforts of the Columbus Space Program.

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