I ran across a rather nice "article" of sorts that describes how to
multiplex multiple 7-segment LED displays. It has some very nice elegant
touches to it. Not sure how I found it, but it is located at
http://www.melabs.com/resources/articles/ledart.htm and, while intended
for the PIC16F84, it should be easy enough to adapt for use with any
PIC.
        The page describes and has circuit diagrams to run 4 7-segment LED
displays, including decimal point, using 12 I/O lines. Check it out, you
will hopefully find it quite helpful.

Sabachka

On Sat, Aug 09, 2003 at 11:53:31PM -0500, Keith L. Kovala wrote:
> Related to the battery monitor, the reason for my jump into the PIC world is
> I want to make an inline voltage meter for some circuits, and the 12 series
> PICs with an A/D converter seem perfect for this.
...
> the adjustment and the LED display show the voltage being put out.  Now the
> 12 series may not work for this of insufficient pins to drive an LED of more
> than one digit.  Unless someone else has an idea of how to cram that all
> into one 12 series chip?!?  Anything in particular I should watch out for in
...
> Keith L. Kovala
> klk@ksu.edu

--
sabachka-piclist@oddmagic.net

I bet the human brain is a kludge.  - Marvin Minsky

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