> So, this is just a semi-conventional multiplexed LED arrays with (for
> example) the anodes connected to the N-1 pins and the
> cathodes for that
> N-1 LEDs connected to the Nth pin, right?  Because of the extra
> connections, you can only drive one anode bit and one cathode bit (one
> LED) at a time...

I multiplex by N-1 LEDs. Some trickery is needed because the current
through the 'on' LEDs depends on the number of on LEDs.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics