Scroll wheel
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A scroll wheel is a wheel used for scrolling. The term usually refers to such wheels found on computer mice. It is often made of hard plastic with a rubbery surface, centred around an internal rotary
A mouse with a scroll wheel between its two buttons
Trackwheel (1) on a BlackBerry
Scroll wheel on a Nokia 7110
Computer mouse
Videos
A computer mouse is a hand-held pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of the pointer on a display, which allows
Scroll wheel
…A scroll wheel is a wheel used for scrolling. The term usually refers to such wheels found on computer mice (where they can also be called a mouse wheel). It is often made of hard plastic with a rubbery surface, centred around an internal rotary encoder. It…
A wireless computer mouse
A computer mouse is named for its resemblance to the rodent.
Inventor Douglas Engelbart holding the first computer mouse, showing the wheels that make contact with the working surface