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A touch screen is an input and output device
Menu options/help is displayed on the screen A stylus may be provided
The screen may be covered by a membrane which is sensitive to pressure Or there may be a line of infrared/light/lasers/sensors at the corners/sides of the screen
The pressure of the user's fi nger is detected/the fi nger cuts the beams
The position of the location is calculated
marlinbito answered the question on July 2, 2018 at 04:29
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