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

How are CS degrees changing?