A touch screen is an input and output device
A stylus may be provided/a finger may be used
The screen is covered by a membrane which is sensitive to pressure
Alternatively, there is a line of infrared/light/lasers/sensors at the corners/sides of the screen
The pressure of the user’s finger is detected/the finger cuts the beams
The x position/coordinate calculated and y position/coordinate calculated
marlinbito answered the question on July 2, 2018 at 08:31
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