Hi:
I have breadboarded a digital counter circuit. I added a hundreds digit and it doesn't
do anything although the units and tens digits work and the counter counts up to
99. I have checked the wiring and I believe that it is correct as it is identical to the
tens digit stage. I have also swapped out the hundreds digit ICs with the tens digit
ICs and they work. I am at a loss as to what the problem could be. I would appreciate
some help.
I have attached a photo of the circuit and a schematic of the 2digit version (the third
digit is identical to the second).
Thanks,
M
I have breadboarded a digital counter circuit. I added a hundreds digit and it doesn't
do anything although the units and tens digits work and the counter counts up to
99. I have checked the wiring and I believe that it is correct as it is identical to the
tens digit stage. I have also swapped out the hundreds digit ICs with the tens digit
ICs and they work. I am at a loss as to what the problem could be. I would appreciate
some help.
I have attached a photo of the circuit and a schematic of the 2digit version (the third
digit is identical to the second).
Thanks,
M
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