The Mouse

Trackballs, light pens, and other clever pointing devices were widespread. Then the mouse was invented. Twice. (Well, at least twice.)

Doug Engelbart reportedly conceived the mouse during a conference lecture in 1961. His first design, in 1963, used rolling wheels inspired by mechanical area-measuring devices called planimeters invented in the 1800s.

Engineers at Germany’s Telefunken also invented a mouse in the mid-1960s. First described in 1968, their version used a rolling ball—essentially a small, upside-down trackball—which became the standard for decades.

Who Named the Mouse?

When asked who named his most famous invention, Doug Engelbart recalled, “No one can remember. It just looked like a mouse with a tail, and we all called it that.” The wire “tail” originally came out under the user’s wrist.

A Menagerie of Mice

The basic idea of the mouse is simple, but there are many variations on the theme. Engineers have experimented with different shapes, numbers of buttons, internal mechanisms, and aesthetics -- as well as with the part of the human body that activates it.