Operating system software

The main functions of an operating system include:

 Providing a user interface so that the user can communicate with the computer

 Communicating with all the hardware devices such as keyboard, screen and printer

 Organising the storage and retrieval of data from disk

 Managing the smooth running of all programs currently in RAM

One of the most commonly-used operating systems is Microsoft Windows. This has a Graphical User Interface (GUI). This means that instead of users having to type complicated text commands, they can use the mouse to point at icons and menus on the screen.