Electrical cables are one of the most important components in all of our everyday electronics. Made of two or more wires running side by side and bonded, twisted, or braided together to form a single assembly, cables carry electrical signals between two devices. This makes them useful for a whole range of purposes, but that doesn't mean that all cables are the same. For each of those purposes, a cable must play a different function, so its structure will be unique in each case.
Mostly usef in electronic devices for power and signal circuits, there are more kinds of cables for other areas. Long-distance communication, for example, is made possible thanks to undersea cables, while power cables can provide bulk transmission of alternating and direct current power. The uses of cables are near endless.