1. What is an operating system?
An operating system is the core software that allows a computer to run as an useful device.  It manages the hardware, the user interface and all other software running on the computer.
 It manages the hardware, the user interface and all other software running on the computer.
Without an operating system, a computer is just a collection of components heating up the room as no-one would be able to make any practical use of the machine.
A large number of operating systems have been developed over the years; each designed with a certain kind of computer in mind. For instance:
- Windows or Linux - for personal computers
- MacOS - for Macs
- Unix - for mainframes
- Symbian, Android - for mobile phones
Although these operating systems have been developed to work with very different types of computers, they all share a number of common functions:
- Providing a user interface
- Managing the computer's memory
- Managing the hardware
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Operating System


