Homonym: controller (Regulator)
A controller is a device or software that manages and directs the operation of other devices or systems. For example, in video games, a game controller allows players to interact with the game by sending commands through buttons and joysticks. Similarly, in a business setting, a financial controller oversees the company's finances, ensuring that budgets are followed and financial reports are accurate.
In the world of electronics, a controller can also refer to a component that regulates the performance of a machine, like a temperature controller in an oven. This device ensures that the oven maintains the desired temperature for cooking, making it essential for achieving perfect results in recipes.