The definition of a cable is two or more wires running in parallel and either braided, bonded or twisted together to form a single assembly. Electrical cables used for communication carry electrical currents in such a way as to convey intelligent information, whether it be ultimately textual information, control information or graphics information. Communications cables tend to be  made from copper, due to its conductive capabilities or fibre glass. Ethernet cables and telephone cables, which normally carry 8 individual wires, twisted together in pairs are probably the most common. Fibre optic cables are becoming more commonplace due to their capacity to carry vast amounts of data and their resistance to Electro Magnetic Interference (EMI).

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