The sensors in this circuit that triggers when the temperature goes out of a certain range are common diodes. The circuit is from the 1991 Reista Electronics Experimenter's Handbook.
This circuit shows how to use flip-flops in a SIPO circuit with serial input and parallel output....
This circuit was found in the National Semiconductor Linear Applications Handbook, published in...
This circuit is from an 80's technical newsletter. The circuit can use any general purpose...