Question

12) What replaced vacuum tubes in a computer?​

Answer 1

Transistor replaced vacuum tube in a computer in 1940s.

Answer 2

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The transistor , which essentially functions as a solid-state electronic switch, replaced the less-suitable vacuum tube. ... Although there have been many designs for transistors over the years, the transistors used in modern computers are normally Metal Oxide Semiconductor Field Effect Transistors (MOSFETs).

Scientists William Shockley, John Bardeen, and Walter Brattain collaborated on inventing the transistor, which would replace the vacuum tube. The transistor worked more efficiently than the vacuum tube and operated on less power.