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In which decade was the transistor invented?

  • A.1940s
  • B.1950s
  • C.1960s
  • D.1980s

Answer: A

It was invented in the 1940s.

John Bardeen and Walter Brattain made the point-contact transistor at Bell Labs in December 1947, and William Shockley followed with the junction transistor. The three shared the 1956 Nobel Prize in Physics.

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