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electronics A three terminal semiconductor amplifying
device, the fundamental component of most active electronic
circuits, including digital electronics. The transistor was
invented on 1947-12-23 at Bell Labs.
There are two kinds, the bipolar transistor (also called the
junction transistor), and the field effect transistor (FET).
Transistors and other components are interconnected to make
complex integrated circuits such as logic gates,
microprocessors and memory.
(1995-10-05)