The first ever mouse
Dr. Douglas C. Engelbart (born January 30, 1925) is an American inventor best known for inventing the computer mouse.
Englebart’s mouse was made of wood and had two wheels connected to transducers that produced analog voltages to represent X and Y coordinate values based on the amount of horizontal and vertical movement.
It was described by as the mother of all demos. On December 9th 1968 Doug Engelbart and a group of researchers from the Augmented Human Intellect (AHI) Research Center at Stanford Research Institute gave a public demonstration of how they saw IT would change the way people work.
The 90 minute demo to 1000 computer professional was the first public showing of a mouse, hypertext linking and significantly the concept of personal computing.