Thursday, December 24, 2009

Dec. 23, 1947: Transistor Opens Door


1947: John Bardeen and Walter Brattain, with support from colleague William Shockley, demonstrate the transistor at Bell Laboratories in Murray Hill, New Jersey.
It’s been called the most important invention of the 20th century. The transistor, aka point-contact transistor, is a semiconductor device that can amplify or switch electrical signals. It was developed to replace vacuum tubes.

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