A circuit board is a piece of insulation that is threaded with conductive wires and similar components. When a power supply introduces an electrical charge to the board, it is distributed along these wires to different components in a variety of ways. This lets the boardcontrol how these components are activated and charged during the use of an electrical device. A wide range of devices include at least one circuit board, including mobile phones, computers, and digital watches.
Also known as Printed Circuit Boards (PCB), they consist of an insulator, usually fiberglass, with threads of conductive material acting as wires on the base of the board. The insulator may consist of one or numerous layers of material glued into a single piece. These additional layers can serve a number of purposes, including grounding the board or providing heat resistance. The threads on the surface of a circuit board are usually copper, created either by laying down individual lines mechanically or by coating the entire board in copper and stripping away excess.
