There is a reed switch connected to a cable and it is connected to portb =
of the PIC.  PIC is on battery voltage of 3 or 3.6 (lithium).  I have =
been reading the pulses generated from the reed switch when magnet is =
brought near.  I have two questions:

* There seems to be no need for debouncing, should I still debounce?
* What is the ideal resistor value to be used (note that the system =
needs low power consumption)
* If the cable between the pic and the reed is about 100meters, (makes =
200 meters of total distance from one pic pin to reed and from reed to =
ground) should the above resistor value be changed?  Would I need any =
other parts like schmitt triggers etc.)?

Any help is appricated,

Omer

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