Orbit x-y Ball Tracker Xerox Star Mystery mouse - wheels instead of a ball Hawley Mark II X063X Lisa mouse Gibson light pen Logitech P7 Mouse Systems Optical M1 Mac M0100 serial Tablet with stylus Microsoft 'Dove bar' Internet scroll mouse Kensington Trackball notebook Trackball joystick 2-button mouse scrolling 2-button mouse NeXT mouse Kidz mouse Macintosh mouse





Mouse Beginnings

Logitech's timeline published on its silver anniversary declares that in 1982, "Logitech introduced its first mouse, the P-4. The P-4 used opto-mechanical technology, featuring optical encoders connected to the rollers to deliver greater tracking precision while providing the tactile response of a rolling ball," proclaiming the first 400 dpi resolution. As usual, every mouse has a tale much more interesting than the bare facts.

Logitech's co-founder, Swiss born Daniel Borel, encountered Douglas Englebart's 1960s invention of the computer mouse at Stanford University in 1976. In 1977 André Guignard and Professor Jean-Daniel Nicoud at the Ecole polytechnique federale de Lausanne in Switzerland designed the computer mouse produced by the watchmaking company Dubois Depraz SA. The opto-mechanical encoders improved on Doug Engelbart's invention but the mouse was ahead of the software development to use it. Logitech purchased and marketed it as the P4 from about 1982-1984, initially for $295.

The Dépraz Mouse was produced for Nicoud's own Smaky personal computers and as OEM equipment for companies including Convergent Technologies, DEC, Hewlett-Packard, and AT&T.

P4 / Dépraz Mouse Drawing in Patent

Depraz mouse Patent #282848 illustration

Dépraz mouse Patent #282848 and Photos »
Dépraz mouse photos »
Dépraz / Digimouse photos »

14 Oct 2009 - World Radio Switzerland reported the passing of René Sommer, who added the micro-processor to the design of the Logitech mouse in 1985.