# Transistor * [[Vacuum Tube]] triode invented in 1907 * [[1909]]: [[William Eccles]] discovered the crystal diode oscillator * [[1935]]: Theory of electronics in bulk semiconductors * [[1945]]: Idea for a semiconductor amplifier * [[1947]]: First working Transistor * [[1959]]:[[Hoerni’s Planar Process]] ### Related * [[narayanamurtiGenesisTechnoscientificRevolutions2021]] [Web URL for this note](http://notes.benjaminreinhardt.com/Transistor) [Comment on this note](http://via.hypothes.is/http://notes.benjaminreinhardt.com/Transistor)