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Multiplexed display information


An entirely-typical multiplexed vacuum fluorescent display used in a videocassette recorder

Multiplexed displays are electronic display devices where the entire display is not driven at one time.

Instead, sub-units of the display (typically, rows or columns for a dot matrix display or individual characters for a character oriented display, occasionally individual display elements) are multiplexed, that is, driven one at a time, but the high switching frequency and the persistence of vision combine to make the viewer believe the entire display is continuously active.

A multiplexed display has several advantages compared to a non-multiplexed display:

  • fewer wires (often, far fewer wires) are needed
  • simpler driving electronics can be used
  • both lead to reduced cost
  • reduced power consumption

Multiplexed displays can be divided into two broad categories:

  1. character-oriented displays
  2. pixel-oriented displays

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