Main activities of an operating system

It is possible to outline four main activities for which an operating system will be responsible for.

These are:

File and disk management. An operating system needs to organize data in a disk in a way that it is easily accessible. At the same time this data needs to be properly secured, so that only those users that need, can access the data.

Process management. An operating system need to allow for reliable process management. It should be able to manage applications and services.

Memory management. System's memory need to be properly allocated for programs and data files.

Device management. An operating system needs to make device available for use. For example a sound card need to be useable, it needs to make system sounds when needed, and allow a user to manage the sounds.

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