On Sun, Nov 19, 2017 at 7:06 PM, <silverdr@wfmh.org.pl> wrote: > >> On 2017-11-19, at 18:58, Francesco Messineo <francesco.messineo@gmail.com> wrote: >> >>> Optical mice shine an led on the surface and then watch the surface move. >>> They weren't available in 1980 >> >> In 1982 for sure, SUN optical mouse for example (I have a few of them). >> The "trick" is that they required a special metal pad with a special >> pattern (cross lines) to function. > > Precisely. Although I thought they came in the second half of the eighties. Sun2 series dates back to 1983 and the 2/50 workstation had already the optical-with-metal-pad mouse, but the whole project (including the mouse) started earlier, patents of the mouse are from 1982 or even older. > > -- > SD! - http://e4aws.silverdr.com/ > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2017-11-19 19:00:57
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