what is operating system ?

 An operating system (OS) is a software that manages computer hardware and software resources and provides common services for computer programs. It acts as an interface between the computer user and the computer hardware, allowing the user to interact with the computer and run applications. The operating system performs tasks such as memory management, process management, device management, and security management. It also provides a user interface for accessing and managing files and directories, launching applications, and configuring system settings. Examples of popular operating systems include Microsoft Windows, macOS, Linux, and Android.

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