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How Thermometers Work

Electronic Thermometers

It is now common to measure temperature with electronics. The most common sensor is a thermoresistor (or thermistor).

This device changes its resistance with changes in temperature. A computer or other circuit measures the resistance and converts it to a temperature, either to display it or to make decisions about turning something on or off. If you would like to build your own electronic thermometer, check out How Microcontrollers Work.

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