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[–] 2 points 1 year ago* (last edited 1 year ago) (1 child)

First optical mouse I used was interning at a university engineering department in 1993. It had a special metal mousepad with a grid on it, and it worked pretty well as I recall.

TIL it was a Kirsch design, one of the first, from 1980.

https://en.wikipedia.org/wiki/Optical_mouse#/media/File:Old_optical_mouse.jpeg

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