World's First Computer Mouse!

Computer mouse is very essential thing when you using computers, now days in laptops, there are touch pads but when using mouse it is very easy.

In 1963, the first mouse invented by Douglas Engelbart at the Stanford Research institute. This inventor Douglas Engelbart also invented the hypertext (Secret codes). In this first mouse used two wheels positioned at a 90 degree to each other to keep track of the movement. That's how it works.