Functions of an operating system

1) Explain what is meant by an ‘operating system’.

 - It is necessary to run all computing devices.

2) When is the operating system loaded?

- When one of the computers is loaded up 

3) List some commonly used operating systems.

- Commonly used operating systems are, Mac, Windows and Linux

4) Explain how the operating system controls the software and hardware on the computer.

-  It uses device driver to translate the specific instruction to save that hardware.

5) Describe two types of user interfaces provided by the operating system.

- Command Line Interface - It used to be the only way to operate the computer. Also it is fast to get things done and does not need a powerful computer. 

- Menu Driven Interface - It is often seen on computers which have limited input device. simple to navigate and you cannot edit the menu. 

6) Explain what is meant by a ‘multitasking operating system’.

-The OS controls multi-tasking making it look like the computer is running two programs at once. It does this by switching the programs very quickly. The CPU is so fast there are times when the ram can’t keep up (video buffering) so the CPU is instructed by the OS to do something this time.