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printed circuit board
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Printed Circuit Board
. The board has a connector which joins it to another piece of equipment.', copy:'(Image © John William Banagan/Getty Images)'});)
, or silicon chip.', copy:'(Image © RM)'});)
. The PCB contains sockets for the integrated circuits, or chips, and the connecting tracks.', copy:'(Image © RM)'});)
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Electrical circuit created by laying (printing) ‘tracks’ of a conductor such as copper on one or both sides of an insulating board. The PCB was invented in 1936 by Austrian scientist Paul Eisler, and was first used on a large scale in 1948.
Components such as integrated circuits (chips), resistors, and capacitors can be soldered to the surface of the board (surface-mounted) or, more commonly, attached by inserting their connecting pins or wires into holes drilled in the board. The increased component density and complexity required by the electronics industry demands increasing use of multilayer PCBs which may have three, four, or more intermediate layers of copper conductor. PCBs include motherboards, expansion boards, and adaptors.
© Research Machines plc 2008. All rights reserved. Helicon Publishing is a division of Research Machines plc.
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alternating current
ammeter
ampere
amplifier
battery
capacitor
cell, electrical
circuit (physics)
diode
direct current
electric current
electronics
farad
generator
integrated circuit
lamp, electric
LCD
light-dependent resistor
light-emitting diode
liquid-crystal display
logic gate
ohm
Ohm's law
operational amplifier
parallel circuit
printed circuit board
rectifier
relay
resistance
resistor
semiconductor
series circuit
switch
thermistor
thyristor
timer circuit
transistor
volt
voltmeter
watt
ammeter
ampere
amplifier
battery
capacitor
cell, electrical
circuit (physics)
diode
direct current
electric current
electronics
farad
generator
integrated circuit
lamp, electric
LCD
light-dependent resistor
light-emitting diode
liquid-crystal display
logic gate
ohm
Ohm's law
operational amplifier
parallel circuit
printed circuit board
rectifier
relay
resistance
resistor
semiconductor
series circuit
switch
thermistor
thyristor
timer circuit
transistor
volt
voltmeter
watt
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