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A mouse is a small handheld input device that controls a computer screen's cursor or pointer in conjunction with the way it is moved on a flat surface. The mouse term name originates from its likeness to a small, corded and elliptical shaped device that looks like a mouse tail. Some mouse devices have integrated features, such as extra buttons that may be programmed and assigned with different commands.
Because the mouse reduces the use of a keyboard, its invention and continuous innovation is considered one of the most important breakthroughs in computer ergonomics.
The mouse was invented in 1963 by Douglas C. Engelbart from Stanford and later pioneered in 1981 by the Xerox Corporation. Computer users were generally skeptical about the mouse invention until approximately 1984, when the original Apple Macintosh (Macintosh 128K) was released.
Early mouse devices connected to computers through a cable or cord and were characterized by a roller ball integrated as a movement sensor underneath the device. Modern mouse devices use optical technology, where cursor movements are controlled by a visible or invisible light beam. Many models feature wireless connectivity through various wireless technologies, including radio frequency (RF) and Bluetooth.
The three main mouse device types are: