Control circuits are systems that manage the operation of electrical devices by directing the flow of electricity. They use various components, such as switches, relays, and sensors, to control the behavior of machines and processes. By interpreting signals, control circuits can turn devices on or off, adjust their speed, or change their settings based on specific conditions. These circuits are essential in many applications, including automated manufacturing, home appliances, and automotive systems. They help ensure that devices operate efficiently and safely, responding to user inputs or environmental changes. Control circuits play a crucial role in modern technology, enhancing functionality and reliability.