Automatic control refers to the use of systems and devices to manage and regulate processes without human intervention. This technology is commonly found in various applications, such as thermostats that maintain temperature, cruise control in vehicles, and industrial automation systems that oversee manufacturing operations. The primary goal of automatic control is to achieve desired outcomes by continuously monitoring and adjusting system variables. By utilizing feedback mechanisms, these systems can respond to changes in their environment, ensuring stability and efficiency in operations. Examples include PID controllers that help maintain specific conditions in processes like heating or cooling.