I/O Managemnt

Question 1

I/O Systems Management

Answer 1

I/O Devices provide communication between the computer and the outside world

The O/S manages these communication interfaces through application programmes then to the OS Kernel ( the core controls everything else) then to the device drivers for Keyboard, mouse, disk, printer and then to the device controllers (Firmware) and then the Hardware the actual physical keyboard, mouse and printer

The OS handles application requests for I/O devices and the release of a device when it is no longer required by the application

Applications generally know which device to request through symbolic file name if using (UNIX) or device name if using (Windows)

The O/S also manages the logical attachment and detachment of I/O devices, e.g. adding printer drivers