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Sensors and actuators form the backbone of smart technologies, enabling systems to perceive, respond, and interact with the physical environment. A sensor is a device that detects changes in the environment or physical parameters such as temperature, pressure, light, motion, or chemical composition and converts this information into electrical signals that can be processed by hardware or software systems. Actuators, on the other hand, are devices that perform actions based on the signals received, converting electrical energy into physical movement or action, such as opening a valve, switching on a motor, or adjusting a thermostat. Together, sensors and actuators ________ _______ _________ _____ ___ _____ ___ ___ ____ _________ ______.
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