Sean H. Breheny wrote:
>
> Hi Israel,
>
> You are absolutely correct, you CAN re-program the 16F84 in-circuit.
>
> All you have to do is provide a means of connecting at least four of the
> 16F84's pins to your programmer. If your circuit can provide power,then
> this is all you need. If your programmer needs to provide power,then you
> need to run a wire for a fifth pin,too.

Or you can use the SimmStick platform.
see http://www.dontronics.com/dt001cha.html

The 84 mounts in a SimmStick, a header cable goes to your target board
socket, ***any*** target board, and you have a load/run operation using
a 4PDT switch.

Don McKenzie  mailto:don@dontronics.com http://www.dontronics.com

Don's Download Dungeon:   http://www.dontronics.com/download.html
Australian Electronics Ring http://www.dontronics.com/aering.html
Win $500USD Cash. Micro design contest:  http://www.simmstick.com