> On 2017-11-19, at 19:11, 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. I don't argue. I believe you are fully right. Just my long time non-refreshed bits of protein based memory were giving me the impression that they came (to the market) somewhat later than you mentioned. -- SD! - http://e4aws.silverdr.com/ Message was sent through the cbm-hackers mailing listReceived on 2017-11-19 19:01:31
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