| Year | Event |
| 1823 | Baron Jons Jackob Berzelius silicon (Si), which today is the basic component of processors. |
| 1903 | Nikola Tesla patents electrical logic circuits called "gates" or "switches". |
| 1947 | John Bardeen, Walter Brattain, and William Shockley invent the first transistor at the Bell Laboratories on December 23, 1947. |
| 1948 | John Bardeen, Walter Brattain, and William Shockley patent the first transistor. |
| 1956 | John Bardeen, Walter Brattain, and William Shockley are awarded the Nobel Prize in physics for their work on the transistor. |
| 1958 | The first integrated circuit is first developed by Robert Noyceof Fairchild Semiconductor and Jack Kilby of Texas Instruments. The first IC was demonstrated on September 12, 1958.
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