If you've ever hooked a CD player or DVD player to your TV, you likely used an RCA cable. A simple RCA cable has three colour-coded plugs extending from one end that connects to three corresponding colored jacks on the back of a TV, projector, or another output device. It carries audio and video signals from the component device to the output device (i.e. a television or speakers).

If you've ever hooked a CD player or DVD player to your TV, you likely used an RCA cable. A simple RCA cable has three colour-coded plugs extending from one end that connects to three corresponding colored jacks on the back of a TV, projector, or another output device. It carries audio and video signals from the component device to the output device (i.e. a television or speakers).