Analysis: visual display units

A visual display unit (VDU) combines a display and a keyboard. Usually the display will be of the cathode‐ray TV type, but it could also be a thin window display, or a flat screen. The keyboard will usually resemble that of a typewriter. Modern designs have a separate display and keyboard, but many designed as a single unit still exist. The two items are used together, either as a terminal interacting remotely with a system, as a stand‐alone micro or word processor with its own local processing, or as a part of a larger piece of equipment.