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transistor
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NMOS transistorNegative-channel metal-oxide semiconductors (NMOS) employ a positive secondary voltage to switch a shallow layer of p-type semiconductor material below the gate into n-type. For positive-channel metal-oxide semiconductors (PMOS), all these polarities are reversed. NMOS transistors are more expensive, but faster, than PMOS transistors. transistor
How the Elliott 803 transistorized computer works
CMOS electron hole: movement p-n junction forward-biased p-n junction cross section of an n-p-n transistor MESFET transistorIn a metal-semiconductor field-effect transistor (MESFET), current is normally on (used to represent “true” or “1”). A secondary voltage is applied to the gate to deplete charge carriers beneath it, thereby pinching off the current, or changing the state to off (“false” or “0”). Moore's law
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ball bearing. Disassembled ball bearing. rotational friction Automobile Industry, Engineering, Industry, Machine Part, Metal Industry, Sphere, Steel, Wheel
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Technician operates the system console on the new UNIVAC 1100/83 computer at the Fleet Analysis Center, Corona Annex, Naval Weapons Station, Seal Beach, CA. June 1, 1981. Univac magnetic tape drivers or readers in background. Universal Automatic Computer
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Photos and Videos

NMOS transistorNegative-channel metal-oxide semiconductors (NMOS) employ a positive secondary voltage to switch a shallow layer of p-type semiconductor material below the gate into n-type. For positive-channel metal-oxide semiconductors (PMOS), all these polarities are reversed. NMOS transistors are more expensive, but faster, than PMOS transistors.
transistor
CMOS
electron hole: movement
p-n junction
forward-biased p-n junction
cross section of an n-p-n transistor
MESFET transistorIn a metal-semiconductor field-effect transistor (MESFET), current is normally on (used to represent “true” or “1”). A secondary voltage is applied to the gate to deplete charge carriers beneath it, thereby pinching off the current, or changing the state to off (“false” or “0”).
Moore's law
first transistor
How the Elliott 803 transistorized computer works
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Key People

Robert Noyce and Gordon Moore
Gordon Moore
American engineer and entrepreneur
Shockley
William B. Shockley
American physicist
Bardeen.
John Bardeen
American physicist
Brattain
Walter H. Brattain
American physicist
Jack Kilby
American engineer
Robert H. Dennard
American engineer
Herbert Kroemer
German physicist

Related Quizzes and Features

Quiz
Technician operates the system console on the new UNIVAC 1100/83 computer at the Fleet Analysis Center, Corona Annex, Naval Weapons Station, Seal Beach, CA. June 1, 1981. Univac magnetic tape drivers or readers in background. Universal Automatic Computer
Computers and Operating Systems
ball bearing. Disassembled ball bearing. rotational friction Automobile Industry, Engineering, Industry, Machine Part, Metal Industry, Sphere, Steel, Wheel
Inventors and Inventions