Digital thermometers work on the principle that changes in temperature cause the resistance of a sensor to change allowing a computer to convert the difference to a digital read-out. The sensor is a thermoresistor, commo... More »

Wireless outdoor thermometers work using thermoresistors to measure temperature. The thermoresistor varies the amount of electricity it allows through the circuit based on the temperature. This information is converted t... More »

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A liquid thermometer works by using the thermal expansion of a liquid within a capillary tube to measure temperature. The precision of this method varies by the liquid used, but all use the fact that when most liquids ar... More »

Digital scales use the strain gauge load cell to convert the force of a given weight to an electric signal. Unlike analog scales, digital ones give weights as an instant digital readout. More »

Digital phone services work by connecting a router equipped with software to a computer and telephone, and then connecting a USB or Ethernet cable from the computer to the router. A splitter is a part of the connection s... More »

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Digital television uses a digital signal that is sent from a digital channel. This signal is condensed into a single program or multiple subchannels to allow for multibroadcasting of different programs. Digital televisio... More »

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Thermocouples produce a measurable voltage as the surrounding temperature increases or decreases, where thermistors change their resistance to electrical current as the temperature changes. Also, thermocouples and thermi... More »