29 Oct
2010
29 Oct
'10
12:22 p.m.
On 29 Oct 2010 at 10:51, Brent Hilpert wrote:
I did the same thing, a '247, along with a
'138 1-of-8 decoder to
decode the high values, feeding a bunch of NAND gates. Use the
blanking input on the 247 to disable it when A-F is being displayed.
Did you avoid the use of the 1-of-8 decoder?
No I used one, though I considered not doing so, given the simplicity
of forming alpha letters (in comparison to forming numbers).
--Chuck