> > There's no need to debounce switches unless you poll them faster
> > than the bounce time. And the only reason you'd need to poll them
> > that fast is if you need low latency, like with a trigger. I
> > generally poll 20 times per second and that works just fine.
> 
> This is fine if you're only worried about bouncing on 
> transitions.  If you
> are doing filtering or the switch could bounce in one of the 
> states (like a
> momentary pushbutton), then you need to sample faster and 
> apply debouncing
> or filtering logic.

This is new to me. You say a pushbutton (lika an ordinary keyboard key)
could bounce *while being pressed down*? And if so, how would you
recognise such a bounce?

Wouter van Ooijen

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