Final answer:
In an IoT system, a controller works with actuators to convert electrical inputs into physical actions, following the processing of data received from sensors.
Step-by-step explanation:
In a typical IoT system, a controller works together with actuators that take electrical input and transform it into physical action. Once a controller has received information from sensors, which detect environmental inputs, it processes this data and then may signal an actuator to take an action, such as moving a motor, opening a valve, or turning on a light. This entire process illustrates how IoT devices interact with the physical world in an automated fashion, demonstrating the interplay between data acquisition and physical response.