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Common digital state machines include computers.
Common digital state machines include computers.
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Display devices can be point based, ray based, or interference based. Point and ray based displays can be studied using [[ray optics]]. Interference based displays must be examined using [[wave optics]]. Point based devices are based on point sources. These include laptop screens, televisions, and smartphone screens.
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Ray based devices are based on [[ray]]s. These include heads up displays in cars.
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Ray based devices are based on [[ray]]s. These include heads up displays in cars.
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==By position==
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===Stereoscopic===
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Stereoscopic visual displays include [[VR headset]]s.
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Interference based devices are also called holographic devices. The display device modulates light that interferes with itself and forms a pattern at some distance. This is the rarest type of device.
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==By representation==
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Display devices can be point based, ray based, or interference based. Point and ray based displays can be studied using [[ray optics]]. Interference based displays must be examined using [[wave optics]]. Point based devices are based on point sources. These include laptop screens, televisions, and smartphone screens.
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==Stereoscopic==
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===Point based===
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Stereoscopic visual displays include [[VR headset]]s.
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===Ray based===
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===Interference pattern based===
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Interference based devices are also called holographic devices. The display device modulates light as in wave optics that interferes with itself and forms a pattern at some distance. This is the rarest type of device.