Explanation

• The operating system is also called the interface  between the user and the computer
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• The Operating System is the Interface between the user and the computer.
• It is called the Interface because it converts the commands the user gives to a language that the computer can understand (machine language) and vice versa.
• Multiple operating systems are available such as Windows, Mac OS, and Linux.
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• virus protection is not the function of the operating system
•  Real-time system operating system reads and reacts in actual time