Kelly, I think what alot of people do is use a current limiting resistor
instead of a fuse.  A 330 ohm resistor will limit the current to about 15
mA for 5V.  It also seems to help with reducing noise from other parts of
your system, but I have to admit I really don't know much about electronics
either so I can't say much more than that.

Good luck,
Mark

 >Is it a good idea to put some sort of electrical "fusing" between a
regulated 5 volt power supply and the PIC input pins?
http://www.piclist.com/piclist/2003/09/22/221816a.txt?

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