Myke said:

>Personally, I would keep in the 1 K to 10 K range because anything greater
>than that could have problems with the input capacitance of the pins (the RC
>time constant would grow so large as to affect the responsiveness of the
>circuit).  Anything less than this will start having some serious current
>(power) requirements.
>
>
>I'm passing these comments out to the PICList.  Does anybody else have
>anything else to add?
>
Another good reason for keeping pullup/down resistors low is to reduce the
probability that noise/glitches/interference can develop enough voltage
across them to turn a one into a zero or vice versa. It only has to happen
for a few nanoseconds. . .

Reg Neale