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Displays work by being connected to a control system like a computer. The computer generates informational signals that the display reacts to and creates light. Displays are necessary for most modern computing.

Displays work by being connected to a control system like a computer. The computer generates informational signals that the display reacts to and creates light. Displays are necessary for most modern computing.

There are two major types of display: World fixed display and head-fixed display. A world fixed display exists in the world, like a laptop, a TV, or a smartphone. A head fixed display is mounted to the head, meaning when you turn your head it stays in front of your eyes. Head fixed displays include [[VR headset]]s and the [[Google Glass]] and gadgets from [[Vuzix]].

Displays can have their point of origin be in the world or on a user's head. A world fixed display exists in the world, like a laptop, a TV, or a smartphone. A head fixed display is mounted to the head, meaning when you turn your head it stays exactly the same in the user's field of vision. Examples of head fixed displays are [[VR headset]]s, [[Google Glass]], and headsets from [[Vuzix]].

The most important features for a display to be useful are [[field of view]], contrast (both static and dynamic and in color), and [[focal depth]] capability.

The most important features for a display to be useful are [[field of view]], contrast (both static and dynamic and in color), and [[focal depth]] capability.