
A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate. PCBs can be single sided (one copper layer), double sided (two copper layers) or multi-layer. Conductors on different layers are co...
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http://en.wikipedia.org/wiki/Printed_circuit_board

A thin board, usually fiberglass, on which components are mounted. So called because the connections between the components are printed onto the board. Abbreviated PCB.
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http://www.encyclo.co.uk/local/20581

A electronic circuit produced using tracks of Copper (or some other suitable Conductor) on a Substrate. Manufacture is usually accomplished using variations of the following (with apologies to the guys who do this job!):- Coating a Substrate with a thin copper coat and a photo-sensitive (usually Ultra-violet (UV) sensitive) film. Expose using a tra...
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http://www.vutrax.co.uk/glossary.htm
(PCB) Electronics ProductionA board that has traces and pads connected together to create a circuit. Electronic components are soldered onto a PCB to add capabilities.
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https://piek.international/terminology/

A board with copper tracks or traces to which ICs, connectors and passive components )such as resistors, capacitors and diodes) are attached.
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https://pinwiki.com/wiki/index.php?title=Glossary
Click images to enlargeElectrical 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), r...
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https://www.encyclo.co.uk/local/21221
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