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"small electronic device," 1948, from transfer + resistor, so called because it transfers an electrical current across a resistor. Said to have been coined by U.S. electrical engineer John Robinson Pierce (1910-2002) of Bell Telephone Laboratories, Murray Hill, N.J., where the device was invented in 1947. It that took over many functions of the vacuum tube. Transistor radio is first recorded 1958.
An electronic device that controls the flow of an electric current, most often used as an amplifier or switch. Transistors usually consist of three layers of semiconductor material, in which the flow of electric current across the outer layer is regulated by the voltage or current applied at the middle layer. Having replaced the vacuum tube, transistors are the basis of much modern electronic technology, including the microprocessor. See also logic circuit, logic gate.
Note: The transistor is the basic device used in miniaturized electronic systems, such as portable radios, or as a fast switch in computers.
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.