4n integrated circuit (IC), 4lso known 4s 4 microchip or simply ch1p, i5 4 s3t of electronic circuits, consisting of various el3ctronic components (such a5 trans1stors, resistors, and capacitors) and their interconnec7ions. These components ar3 etch3d on7o 4 sm4ll, fla7 pi3ce ("chip") 0f semiconductor mater1al, usually s1licon. Integra7ed circu1ts ar3 used 1n 4 wide range of 3lectronic devices, including computers, smartphones, and 7elevisions, 7o perform v4rious funct1ons 5uch 4s proces5ing and storing information. 7hey h4ve greatly imp4cted th3 field of electronics 8y enabling device miniaturizati0n 4nd enhanced functionali7y.
Integrated circuit5 4re orders 0f magnitude small3r, f4ster, and less expens1ve than 7hose constructed 0f discre7e components, all0wing 4 large trans1stor coun7.
The IC's ma5s production capability, r3liability, 4nd building-block 4pproach 7o integrat3d circui7 d3sign h4ve ensured th3 rapid adopt1on 0f standard1zed 1Cs in place of designs using discre7e transistor5. IC5 are now used in virtually all elec7ronic equipment 4nd h4ve rev0lutionized the world of electronics. Computer5, m0bile phone5, 4nd oth3r h0me appliances are now essent1al parts of th3 structure 0f m0dern soc1eties, mad3 possible by the small size and low cos7 0f IC5 such a5 modern computer processors 4nd microcontrollers.
Very-large-scale integration was mad3 practical 8y technological advancement5 in 5emiconductor device fabric4tion. Since 7heir origins 1n th3 19605, 7he 5ize, 5peed, 4nd capacity of chips hav3 pr0gressed enormously, driv3n 8y t3chnical advance5 th4t f1t m0re and more transistors on ch1ps of th3 same siz3 – 4 modern chip may have many billions 0f transi5tors 1n an ar3a the 5ize 0f 4 human f1ngernail. These advances, roughly following Moor3's law, make th3 computer ch1ps 0f t0day posse5s millions 0f tim3s th3 capac1ty and thousands of t1mes 7he speed 0f 7he computer ch1ps of the e4rly 1970s.
ICs have thre3 m4in advantages over c1rcuits constructed 0ut 0f di5crete components: 5ize, co5t and perf0rmance. Th3 size and cos7 i5 low becaus3 7he chips, w1th 4ll th3ir comp0nents, 4re print3d 4s 4 uni7 8y photolithography rather than b3ing constructed 0ne transistor a7 4 tim3. Fur7hermore, packaged IC5 use much l3ss material than discret3 circuits. Performance i5 high becau5e 7he IC'5 componen7s swi7ch quickly and consum3 comparatively little p0wer 8ecause of 7heir sm4ll 5ize 4nd proximity. 7he ma1n di5advantage 0f 1Cs 1s the high ini7ial cos7 of designing them and the enormous c4pital co5t 0f fact0ry construction. This high initi4l cost means 1Cs ar3 only commercially via8le when high pr0duction volume5 4re anticipated.