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Object

Apollo Guidance Computer

A vintage Apollo Guidance Computer, a compact flight computer from the Apollo program, featuring a small CRT display, a numeric keypad, and various control knobs against a dark background.

The on-board flight computer of the Apollo command and lunar modules, designed at MIT between 1961 and 1966. About the size of a briefcase, with roughly four kilobytes of erasable memory and seventy-two of woven read-only memory, it ran a priority-scheduled real-time operating system at an effective 40 kHz. It flew every crewed Apollo mission and was the first computer built almost entirely from integrated circuits.

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