Comparator Ic How To Make A 0-4 Pulses Counter With A Comparator?

How to make a 0-4 pulses counter with a comparator? - comparator ic

I need a circuit that count from 0 to 4 or maybe a little to 5, 6 or maybe 7, not more than 7 pulses can. I need some distance to give the orders over the phone so the phone is connected to the line and I intend to interpret the audio signal into a signal directly to a rectifier bridge circuit that, how to convert a signal that the individual pulse. However, in the same way as the responders to the house that we expect 4 to 7 "cycles", which tells us to leave a message we need to get this circuit waits too long, so I thought that using one Timer IC count of the pulses and a comparator IC ... when the number of counted pulses corresponds to the number of comparisons, it sends a signal to the other end of the trail that control me things. At the moment I have problems with this part of the trail, the counter and the comparison with, I do not know how to define, so if any of you have a diagram of an agreement or have set instructionstions as the number of pulses is fixed, I want to say whereULD greatly appreciated. Now I have an accountant for specific IC or a comparison, do not hesitate, then, a friend, I know that the most common are that from 7400 to 7800 series.