On Mon, Feb 09, 2004 at 03:46:02PM -0500, Vlad wrote:
> I'm in the process of designing a toy circuit to keep track of life
> counters for various games.  It should support 3 players.  Each player
> will have two 7 segment LED displays that will display a number between
> 0-99, and also 2 switch buttons that will be used to increase and
> decrease the number displayed on these LED displays.
>
> I have a handful of 16f84 PIC's and currently learning how to program
> them.  With only a limited number of input/output pins on this chip
> (13 I believe) what would be a good way to allocate these pins for the
> switch buttons and displays?

I appreciate all the responses I have received thus far.  I am new
to electronics so I will have to research all these ideas to fully
understand them.  Perhaps then I will come back with more specific
questions after I have picked one of these methods... (although the
technique that Bob is describing sounds attractive, tristate the pins
to out/in so that they may share LEDs and switches)

Well if you have any other good suggestions, keep em coming. :) I will
summarize later if there is enough interest.

Thanks
-v

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