Harvard Mark IV 64-bit magnetic shift register

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Date Introduced
1952 ca.
Photographer
Richards, Mark
Dimensions
4 1/2 x 30 x 4 /12 in.
Manufacturer
Harvard University
Credit Line
Gift of Robert Trocchi
Copyright Owner
© Mark Richards
Object ID
XD6.75

The Mark IV, the last of Aiken’s machines at Harvard, had ferrite core memory and was much faster than its predecessor. It was used at Harvard by the US Air Force for engineering and scientific calculations.