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Basic I-P-O model • Simplistically, sensors take analogue input and convert them to digital data. • Digital data can then be processed by a microprocessor, producing digital output. • Output transducers can then turn the digital data into analogue signals to power ‘real world’ devices
An Output transducer, or actuator, does the opposite of an Input transducer. It takes electrical signals and converts them into another form of energy. For example, a lamp converts electricity to light and a motor converts electricity into motion.
Transducers are used every time a signal has to be converted from one form to another.
Input = sensor (via transducer) Output = actuator (via transducer)
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