The computer mouse was invented by Douglas Engelbart in 1963. Engelbart was working at the Stanford Research Institute at the time, and he designed the mouse as a way to improve the speed and accuracy of cursor control on a computer.

The mouse is a simple device that consists of a ball or trackball, a couple of buttons, and a cable. The user rolls the ball around to move the cursor on the screen, and clicks the buttons to select options or enter text.

Engelbart’s mouse was not the first such device, but it was the first to be widely …