Enabling Technology
1947 the first Transistor was invented by Bardeen, Brattain and Shockley in the Bell Labs in the USA.
Intel's 4004 IC chip, generally acknowledged as the world's first "microcomputer on a chip," was originally designed in 1969-70 for the Busicom (Japan) 141-PF desktop calculator.
1958 Jack Kilby invented the integrated circuit at Texas Instruments and got the Noble Prize. Comprised of only a transistor and other components on a slice of germanium, Kilby's invention, 7/16-by-1/16-inches in size, revolutionized the electronics industry.
1904 Sir John Ambrose Fleming invents the vacuum tube and diode.