What are the three main functions of an operating system?

The main functions of the operating system are: 1. Resource management; 2. Program control; 3. Human-computer interaction. An operating system is a computer program that manages and controls computer hardware and software resources, and is the interface between users and computers.

#The main functions of the operating system include resource management, program control and human-computer interaction.

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The operating system (Operating System, referred to as OS) is a computer program that manages and controls computer hardware and software resources. Users and The computer interface is also the interface between computer hardware and other software. It can manage the hardware, software and data resources of the computer system, control program operation, improve the human-machine interface, provide support for other application software, and maximize the use of all resources of the computer system. In addition, it also provides various forms of user interfaces to enable users to have a good working environment and provide necessary services and corresponding interfaces for the development of other software.

The functions of the operating system include managing the hardware, software and data resources of the computer system, controlling program operation, improving the human-machine interface, providing support for other application software, etc., so as to maximize the use of all resources of the computer system. Various forms of user interfaces are provided to enable users to have a good working environment and provide necessary services and corresponding interfaces for the development of other software. In fact, users do not need to contact the operating system. The operating system manages computer hardware resources and allocates resources to applications according to their resource requests, such as dividing CPU time, opening up memory space, calling printers, etc.

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