For users who prefer the touchpad interface, touchpads are available for desktop computers as well. Since a touchpad does not require desk space, it can commonly be found embedded into lap tops, personal digital assistants, and portable media players. Instead of using sensors and a roller ball or laser like a mouse, a touchpad is a soft pad with sensors that respond to finger movements on the pad. It works much like a mouse, allowing users to move a cursor to select items and perform other functions, but is designed in a different way. A touchpad is a device designed to translate user input in the form of motions aimed at moving a cursor to a computer.
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