Tal wrote :
> Did anyone come across a circuit that can monitor the state of some
> switches?
> The general idea is to monitor the state of any switch (high/low) and
> measure the elapsed time that the switch is on or off.
> any circuit or idea will be most appreciate.
>
> Thanks

I must be missing something here...

A circuit to measure elapsed time ?
Using a PIC seams in line with the general topic of this maillist :-)
A pin with the internal pullup enabled maybe ?

Is this an old thread ?

Jan-Erik.

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