1 Nov
2010
1 Nov
'10
6:35 p.m.
On 1 Nov 2010 at 17:41, Brent Hilpert wrote:
Well, a starting point could be to replace the 74154
in the 1-of-16
decoder solution with 4 inverters and 16 4-in nands (9 packages), plus
the 4 packages remaining of that solution to do the segment selection,
gives 13 packages. Optimisation anyone?
I'll eliminate some of the grunt work for folks and offer the
following document, which contains all of the Karnaugh maps and a
simple logic diagram.
http://www.strivingafterwind.com/EE/EE112/ee112formal.pdf
I'd probably start by using a 7404 and distribute the binary input
and its complement... :)
--Chuck