Answer:
Device management:
Device Control and Device driver helps the operating system to manage the devices. There are so many devices connected to the network and those needs to be managed.
For eg. Printer, Scanner, Memory controller, tape-drive controller etc.
This will main a list of free and currently used devices. Suppose if any of the device is free and the user request for a device, then the device controller allots the free resource.
Device controller is basically a hardware component.