A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other. A diode vacuum tube or thermionic diode is a vacuum tube with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from cathode to plate. A semiconductor diode, the most commonly used type today, is a crystalline piece of semiconductor material with a p–n junction connected to two electrical terminals. Semiconductor diodes were the first semiconductor electronic devices. The discovery of asymmetric electrical conduction across the contact between a crystalline mineral and a metal was made by German physicist Ferdinand Braun in 1874. Today, most diodes are made of silicon, but other semiconducting materials such as gallium arsenide and germanium are also used.
invented by Dawon Kahng Mohamed Atalla
The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or…
invented by Herbert A. Gilbert
An electronic cigarette is an electronic device that simulates tobacco smoking.…
invented by MITS
Altair 8800 is the spark that ignited the microcomputer revolution.
invented by CERN
A touchscreen or touch screen is the assembly of both an input (‘touch…
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