Visual display unit

A visual display unit, frequently called simply a monitor, is a piece of electrical equipment which displays viewable images generate by a computer without producing a permanent record. The word "monitor" is used in other contexts; in exacting in television broadcasting, where a television picture is displayed to a high standard. A computer display device is typically either a cathode ray tube or some form of flat panel such as a TFT LCD. The monitor comprises the display device, circuitry to produce a picture from electronic signals sent by the computer, and an enclosure or case. Within the computer, either as a necessary part or a plugged-in interface, there is circuitry to convert internal data to a format compatible with a monitor.