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dec 29, 1939 - Mark 1

Description:

Definition of: Mark I. Mark I. A programmable, electromechanical calculator designed by professor Howard Aiken. Built by IBM and installed at Harvard in 1944, it strung 78 adding machines together to perform three calculations per second.

Added to timeline:

Date:

dec 29, 1939
Now
~ 86 years ago

Images: