At 01:39 AM 9/11/2005 -0700, you wrote:
>I vaguely recall an optimization where you could get by with less
>than 7 connections to an LED display if all you wanted was the
>digits 0123456789, but I'm not finding it via search, and just
>looking at the digits isn't helping...  It may have involved some
>logic (segment x is always NOT segment y), in which case it's no
>use to me, but the half-memory is driving me batty...
>
>Any ideas?

Not on that, but don't forget the trick where you can (sometimes, depending
on required drive current and internal connections) mostly share digit and
segment drive lines on multiplexed displays to save port pins (8 pins being
sufficient to drive up to 8 displays with no decimal point). Rather low
average current per LED segment, of course.

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
->> Inexpensive test equipment & parts http://search.ebay.com/_W0QQsassZspeff


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