8 Dec
2007
8 Dec
'07
7:21 p.m.
The good news is that it's easy to prototype one up
and
see how it works on a breadboard.
Breadboard? As in hardware? That's for sissies - we have simulators now
:-)
FWIW, I tried it and it is possible to fit a decimal counter with seven
segment outputs, a carry out, and a synchronous clear into a single 16V8.
Hint: you have to invert one of the state machine bits, and then invert the
corresponding output pin, but if you do that it'll fit.
You didn't say whether you need a parallel load (in BCD, presumably) too -
that'd almost certainly be too many AND terms.
True. Power is not really an issue here. The LEDs are
going to pull
a fair amount of power on their own, not including counting and driving.
A 16V8 can use 100mA or so. How many decades did you say you wanted?
That's gonna add up fast...
Bob