On Sun, 18 Feb 2001, Gregory S. Youngblood wrote:
> I remember being at a computer show in Minneapolis where a small company
> was showing off this mouse that worked on a variety of surfaces without a
> ball. I'm trying to remember if the mouse was optical or used yet another
> method of functioning -- I think it was optical, though I could be
> mistaken. This was in 1992/1993.
>
> The point is, I really do not believe Microsoft made the "leap" to provide
> opitcal mice without the need of the mousepad grid. Their "innovation" was
> in marketing it on a wide scale though.
I believe I read about an optical mouse that worked on any surface by
tracking surface constrast movement in an old issue of Byte. I think it
was an Xerox invention, but my memory may be off.
Peter
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