Touch screens allow users to press buttons directly on the screen instead of a separate input device, such as a mouse or keyboard. They are fitted with grid overlays that respond to pressure and send user commands to the computer, depending on the location of each press. They are commonly used in applications requiring fast and accurate movement, such as video games and handwriting input. Touch screens may be operated with the fingers, but most users prefer a digital pen or stylus for better precision and less wrist strain.
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