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an electronic visual display that can detect the presence and location of a touch within the display area

A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touchscreens can also sense other passive objects, such as a stylus. Touchscreen is common in devices such as all-in-one computers, tablet computers, and smartphones.

Reference: Wikipedia article on 'Touch screen', retrieved 2011-04-26

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