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Sensors are input devices that record data about the physical environment around it. Sensors send data to a microprocessor (computer). They do not make judgements, decisions or control any output devices. There are many types of sensors used in a variety of household, commercial and industrial applications.
Microprocessors are tiny computers embedded in household items, such as televisions, washing machines, burglar alarms and greenhouses. Through the use of input and output connections they can monitor and control the devices in real time.
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