This description details the history of the computer mouse, which was first released in 1981. It was the first computer to use a mouse as an input device, revolutionizing the way we interact with computers. The mouse has since become a ubiquitous part of the computing experience, and its introduction in 1981
From Wikipedia
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 a smooth control of the graphical user interface of a computer.