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Nt1310 Unit 4 Video Display Devices

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Nt1310 Unit 4 Video Display Devices
An output device is a computer hardware which is used to communicate the electronically obtained information resulted by processing performed by an information processing system such as computer into human readable form.

2.1 Video display devices
It is an electronic device which is used as an output device to represent information in visual form. For example CRT, LCD monitors, Television screen etc.
Let us discuss some key concepts to be used for better understanding of video display device

Phosphor: It is a key substance use to display in video display devices. This substance emits light when exposed to electron beam.

Persistence: There are different kinds of phosphors which differ in their persistence. Persistence means the time taken
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