History of Computer Mice - The Last 40 Years
The computer mouse made its worldwide debut 40 years ago in a presentation by Stanford Research Institute engineer Douglas Engelbart. Later called "the mother of all demos," it was a groundbreaking demonstration of how computers could help ordinary people work together, think better and — hopefully — make solving the world's problems that much easier.
Engelbart's first mouse was carved out of a block of wood and had just one button, just like Apple's. Underneath were two wheels connected to potentiometers: One recorded the mouse's movement along the x axis, the other one tracked the y axis.
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