Circuit to compare the output voltage signal positive (non-inverting) and negative (inverting) of the op amp to compare the leg that is worth more than another.
A circuit that compares the pressure signal between the crawlers (non-inverting) and a op-(inverting) signal in order to compare which legs are more valuable. ...
A circuit that compares the voltage signals between the positive electrodes, i.e., the irreversible flip-flop 41 with a reverse flip-flop 41 and the op amp. scraper<br>