integrated circuit

noun Electronics.
a circuit of transistors, resistors, and capacitors constructed on a single semiconductor wafer or chip, in which the components are interconnected to perform a given function. Abbreviation: IC
Also called microcircuit.


Origin:
1955–60

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Collins
World English Dictionary
integrated circuit
 
n
IC a very small electronic circuit consisting of an assembly of elements made from a chip of semiconducting material, such as crystalline silicon

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
integrated circuit   (ĭn'tĭ-grā'tĭd)  Pronunciation Key 
A device made of interconnected electronic components, such as transistors and resistors, that are etched or imprinted onto a tiny slice of a semiconducting material, such as silicon or germanium. An integrated circuit smaller than a fingernail can hold millions of circuits. Also called chip, microchip.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

integrated circuit definition


A miniaturized electrical circuit built on a microchip.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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FOLDOC
Computing Dictionary

integrated circuit definition

electronics
(IC, or "chip") A microelectronic semiconductor device consisting of many interconnected transistors and other components. ICs are constructed ("fabricated") on a small rectangle (a "die") cut from a Silicon (or for special applications, Sapphire) wafer. This is known as the "substrate". Different areas of the substrate are "doped" with other elements to make them either "p-type" or "n-type" and polysilicon or aluminium tracks are etched in one to three layers deposited over the surface. The die is then connected into a package using gold wires which are welded to "pads", usually found around the edge of the die.
Integrated circuits can be classified into analogue, digital and hybrid (both analogue and digital on the same chip). Digital integrated circuits can contain anything from one to millions of logic gates - inverters, AND, OR, NAND and NOR gates, flip-flops, multiplexors etc. on a few square millimeters. The small size of these circuits allows high speed, low power dissipation, and reduced manufacturing cost compared with board-level integration.
The first integrated circuits contained only a few transistors. Small Scale Integration (SSI) brought circuits containing transistors numbered in the tens. Later, Medium Scale Integration (MSI) contained hundreds of transistors. Further development lead to Large Scale Integration (LSI) (thousands), and VLSI (hundreds of thousands and beyond). In 1986 the first one megabyte RAM was introduced which contained more than one million transistors.
LSI circuits began to be produced in large quantities around 1970 for computer main memories and pocket calculators. For the first time it became possible to fabricate a CPU or even an entire microprocesor on a single integrated circuit. The most extreme technique is wafer-scale integration which uses whole uncut wafers as components.
[Where and when was the term "chip" introduced?]
(1997-07-03)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
But instead of the steel and oil of the past, you'll find tightly integrated
  circuit boards.
He also led a team that designed a new type of high-speed integrated circuit
  for particle detectors.
The gist of my article was really that integrated circuit technology is going
  to make electronics cheap.
The gadget is called a photonic integrated circuit, and it represents an
  important practical advance in optical data transmission.
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