Controller
In computer science, controllers are electronic components that control various pro-cesses. Controllers support the central processing unit CPU. If these components consist of an integrated circuit, they are termed microcontrollers. Among other things, controllers are responsible for commands entered via the keyboard or access to storage media such as the hard drive. These control units are also often called adapters. These include, for example, network adapters such as WLAN controllers that connect the computer to a network. A graphics controller, for example, is re-sponsible for connecting the computer and display device with one another.