Analogue to Digital Conversion
Up to now we have considered inputs as being digital in operation, i.e., the input is either a 0 or 1. But suppose we wish to make temperature measurements, but not just hot or cold (1 or 0). We may for example require to:
Sound a buzzer if the temperature drops below freezing.
Turn a heater on if the temperature is below 18°C.
Turn on a fan if the temperature goes above 25°C.
Turn on an alarm if the temperature ...