Hello.
Enclosed you can find my circuit.
Problem is that, when I preset 8 on IC2 and nothing on IC1, I properly have a pulse on pin 13 of IC2 every 80 pulses.
When I preset 8 on IC2 and 2 on IC1 (as enclosed) I have a pulse on pin 13 of IC2 every 2 pulses, as the 80 (or the preset on IC2) would have been lost.
This happens only in real circuit, in Proteus simulation everything's OK.
Thank you in advance for any suggestions.
Enclosed you can find my circuit.
Problem is that, when I preset 8 on IC2 and nothing on IC1, I properly have a pulse on pin 13 of IC2 every 80 pulses.
When I preset 8 on IC2 and 2 on IC1 (as enclosed) I have a pulse on pin 13 of IC2 every 2 pulses, as the 80 (or the preset on IC2) would have been lost.
This happens only in real circuit, in Proteus simulation everything's OK.
Thank you in advance for any suggestions.
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