At 10:58 AM 7/24/97 +0300, you wrote:
>  Vdd is power supply , Vss is ground but what is Vpp ?? It is in the
>documents of Serial Programming a Pic16C84 . A pin of Pic chip ???
>
>
Vpp is the programming voltage. This needs to be present to program the eprom
in the chip.


Larry G. Nelson Sr.
L.Nelson@ieee.org
http://www.ultranet.com/~nr