On 31 Oct 2010 at 23:48, Dan Roganti wrote:
4 chip solution, 74247, 74138, 7407, 4066
No rule against using diodes ;)
http://www.vintagecomputer.net/ragooman/files/schematics/hexdec/hexdec
oder1a.jpg
If there's no rule against diodes, then there's a 1-chip solution--a
74154 feeding a diode matrix. Indeed, as I mentioned, there are even
diode arrays with 74xxx part numbers.
--Chuck