Pbsorgtransistor john bardeen att bell labs 19451951

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Unformatted text preview: 00 vacuum tubes, relays •  Punch card inputs, ~5 kHz speed •  It failed ~every five days •  •  Note: ILLIAC @ UIUC •  5 tons, 2800 vacuum tubes •  64k memory (1952) Modern age •  The first semiconductor transistor •  AT&T Bell Labs, Dec 1947 •  J. Bardeen, W. BraOain, W. Shockley •  Germanium base, gold foil contacts •  Note: ILLIAC II @ UIUC •  Built with discrete transistors (1962) Sources: Wikipedia, h:p://www.pbs.org/transistor John Bardeen •  AT&T Bell Labs 1945 ­1951 •  Univ. Illin...
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