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[[File:Microsoft IntelliMouse Optical Black.jpg|thumbnail|An Optical [[Microsoft]] Mouse]]
[[File:Apple Mighty Mouse top viewo.jpg|150px|thumbnail|An Optical Apple Mouse]]
A '''computer mouse''' is a device that usually measures around 3 inches that is used as input to control a pointer on a [[computer]] screen. Variations include a trackpoint and motion sensing devices.
A '''computer mouse''' is a device that usually measures around 3 inches that is used as input to control a pointer on a [[computer]] screen. Variations include a trackpoint and motion sensing devices.
==Features==
==Features==
Computer mice usually have two features, something on the bottom (a laser, or trackball)to sense motion and move the pointer around on the screen, and at least one button to click. Modern mice also have scroll wheels on top to help scroll and right-click buttons which provie a variety of different functions.<ref>http://inventors.about.com/library/weekly/aa081898.htm</ref>
Computer mice usually have two features, something on the bottom (a laser, or trackball)to sense motion and move the pointer around on the screen, and at least one button to click. Modern mice also have scroll wheels on top to help scroll and right-click buttons which provide a variety of different functions.<ref>http://inventors.about.com/library/weekly/aa081898.htm</ref>
==Origin==
==Origin==