Marquand Circuit
Setting the Enigma
Programming the Bombe
Betty Jean Jennings (left) and Fran Bilas (right) operate ENIAC's main control panel (from Wikipedia)
4 of the forty ENIAC panels at Penn.
Claude Shannon
The IBM 650
Drum Storage on an IBM 650, c. 1955
core circuitry from the IBM Whirlwind computer.
Grace Murray Hopper, 1960
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