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3. Single User, Single application

This type of operating system only has to deal with one person at a time, running one user application at a time.

An example of a this kind of operating system would be the operating system of a basic mobile phone or an mp3 player.

There can only be one user using the device and that person is only using one of its applications at a time.

But it still has the same fundamental parts as all the other types of operating system.

Example of an MP3 player

A mp3 player contains a computer to handle all of its functions. It has a small amount of memory and a number of specialist silicon chips.

The operating system is installed in memory and runs as soon as you switch on the device.