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William Shockley announces the invention of the junction transistor.
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William Shockley
American physicist and engineer (1910–1989)
William Bradford Shockley was an American solid-state physicist, electrical engineer, and inventor. He was the manager of a research group at Bell Labs that included John Bardeen and Walter Brattain. The three scientists were jointly awarded the 1956 Nobel Prize in Physics "for…Source: Wikipedia (CC BY-SA)
Bipolar junction transistor
Transistor that uses both electrons and holes as charge carriers
A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. In contrast, a unipolar transistor, such as a field-effect transistor (FET), uses only one kind of charge carrier. A bipolar transistor allows a small…Source: Wikipedia (CC BY-SA)