A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals.

It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. TRANSISTOR A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. CMOS (complementary MOS), a semiconductor device fabrication process for MOSFETs, was developed by Chih-Tang Sah and Frank Wanlass at Fairchild Semiconductor in 1963.The first report of a floating-gate MOSFET was made by Dawon Kahng and Simon Sze in 1967. A double-gate MOSFET was first demonstrated in 1984 by Electrotechnical Laboratory researchers Toshihiro Sekigawa and Yutaka Hayashi. FinFET (fin field-effect transistor), a type of 3D non-planar multi-gate MOSFET, originated from the research of Digh Hisamoto and his team at Hitachi Central Research Laboratory in 1989. MOSFET The metal–oxide–semiconductor field-effect transistor (MOSFET) was invented by Mohamed Atalla and Dawon Kahng in 1959. The MOSFET largely superseded both the bipolar transistor and the JFET, and had a profound effect on digital electronic development. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. The MOSFET is also capable of handling higher power than the JFET. The MOSFET was the first truly compact transistor that could be miniaturised and mass-produced for a wide range of uses. The MOSFET thus became the most common type of transistor in computers, electronics, and communications technology (such as smartphones). The US Patent and Trademark Office calls it a 'groundbreaking invention that transformed life and culture around the world'. The most widely used field-effect transistor is the MOSFET (metal-oxide-semiconductor field-effect transistor). Field effect transistors generally display very high input impedance at low frequencies. Many different types of field effect transistors exist. That is, FETs use electrons or holes as charge carriers in their operation, but not both. FETs are also known as unipolar transistors since they involve single-carrier-type operation. FETs control the flow of current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source. FETs are devices with three terminals: source, gate, and drain. FET’s The field-effect transistor ( FET) is a type of transistor which uses an electric field to control the flow of current. Silicon is a critical element for fabricating most electronic circuits.

After silicon, gallium arsenide is the second most common semiconductor and is used in laser diodes, solar cells, microwave-frequency integrated circuits and others. Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called 'metalloid staircase' on the periodic table.

The behavior of charge carriers which include electrons, ions and electron holes at these junctions is the basis of diodes, transistors and all modern electronics. Where two differently-doped regions exist in the same crystal, a semiconductor junction is created. Its conducting properties may be altered in useful ways by introducing impurities ('doping') into the crystal structure. Its resistance falls as its temperature rises metals are the opposite. FETs, Transistors, Diodes Reference: Wikipedia Semiconductor A semiconductor material has an electrical conductivity value falling between that of a conductor, such as metallic copper, and an insulator, such as glass.

Fet transistor