What is meant by an operating system?

An operating system is the low-level software that supports a computer's basic function, such as scheduling tasks and controlling peripherals.

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What is meant by system software

System software is a type of computer program  that is designed to run a computer’s hardware and application programs. The system software is the interface between the hardware and user application.

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Describe the functions of the operating system

An operating system has three main functions:

1) Manage the computers resources, such as the central processing unit, memory, disk drives, nd printers.

2) Establish a user interface.

3)Execute and provide services for applications software.

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