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A PCB (Printed Circuit Board) is a foundational electronic component that physically supports and electrically connects other parts like chips, resistors, and capacitors. It uses conductive copper traces on an insulating base (e.g., fiberglass) instead of messy wires.
PCBs come in single, double, or multi-layer designs—multi-layer ones suit complex devices (smartphones, PCs) for compactness. They ensure stable signal transmission, reduce short-circuit risks, and enable mass production of electronics.
Nearly all modern devices rely on PCBs, making them essential for organizing components into functional, miniaturized electronic systems.
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