നിയന്ത്രിക്കുക(An object that enables user interaction or input, often to initiate an action, display information, or set values); നിയന്ത്രണം(Management of a computer and its processing abilities so as to maintain order as tasks and activities are carried out. Control applies to measures designed to ensure error-free actions carried out at the right time and in the right order relative to other data-handling or hardware-based activities)