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 a pointer on a display, which allows a smooth control of the graphical user interface. The first public demonstration of a mouse …
A computer mouse with the most common features: two buttons (left and right) and a scroll wheel, which can also act as a third button.
Inventor Douglas Engelbart holding the first computer mouse, showing the wheels that make contact with the working surface
Mechanical mouse, shown with the top cover removed. The scroll wheel is gray, to the right of the ball.