source= http://www.piclist.com/piclist/2004/03/26/033108a.txt?

Matt Pobursky  says:
>
> Here's an article by Jack Ganssle exploring mechanical
> switches and contact bounce:
>
>
> http://www.embedded.com/showArticle.jhtml?articleID=18400810
>

Actually, that was one of the better articles I've ever read on the subject.


From what I could gather, an RC filter would actually make the bouncing
worse, and hysterisys (sp?), a comparator, and/or schmidt trigger should
make it better because a lot of it comes from time spent crossing over the
"illegal" range between a 0 and a 1.

Has anyone tried that sort of hardware debouncing?

Also, he says those "cheap" membrane, carbon button type switches are almost
bounce free except for the time spent in "no mans land."

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