An electronic visual display, informally a screen, is a display device for presentation of images, text, or video transmitted electronically, without producing a permanent record. Electronic visual displays include television sets, computer monitors, and digital signage.

visual display unit

<hardware> (VDU, or "video terminal", "video display terminal", VDT, "display terminal") A device incorporating a cathode ray tube (CRT) display, a keyboard and a {serial port}. A VDU usually also includes its own display electronics which store the received data and convert it into electrical waveforms to drive the CRT. VDUs fall into two categories: dumb terminals and intelligent terminals (sometimes called "programmable terminals"). Early VDUs could only display characters in a single preset font, and these were confined to being layed out in a rectangular grid, reproducing the functionality of the paper-based teletypes they were designed to replace. Later models added graphics facilities but were still driven via serial communications, typically with several VDUs attached to a single multi-user computer. This contrasts with the much faster single bitmap displays integrated into most modern single-user personal computers and workstations. The term "Display Screen Equipment" (DSE) is used almost exclusively in connection with the health and safety issues concerning VDUs. {Working with VDUs - UK Heath and Safety Executive (http://hse.gov.uk/pubns/indg36.pdf)}. (2002-11-09)

A computer monitor is an output device that displays information in pictorial or text form. A monitor usually comprises a visual display, some circuitry, a casing, and a power supply.

A plasma display panel (PDP) is a type of flat panel display that uses small cells containing plasma: ionized gas that responds to electric fields. Plasma televisions were the first large (over 32 inches diagonal) flat panel displays to be released to the public.