What is the role of operating system

The role of the operating system is to control and manage system resources. The operating system is a computer program that manages hardware and software resources. Its main functions are: 1. Process management, mainly process scheduling; 2. Storage management, mainly storage allocation, sharing and expansion; 3. Device management; 4. File Management; 5. Job management, responsible for processing any requirements submitted by users.

The operating environment of this article: Windows7 system, DELL G3 computer

The role of the operating system is to control and manage system resources.

The operating system (operation system, referred to as OS) is a computer program that manages computer hardware and software resources. The operating system needs to handle basic tasks such as managing and configuring memory, determining the priority of system resource supply and demand, controlling input and output devices, operating the network, and managing the file system. The operating system also provides an operating interface for users to interact with the system.

Function

The computing operating system can be said to be very important to the computer. From the user's point of view, the operating system can control various resource blocks of the computer system. Carry out scheduling work, including software and hardware equipment, data information, etc. The use of computer operating systems can reduce the intensity of manual resource allocation, reduce the user's intervention in computing operations, and greatly improve the computer's intelligent work efficiency. . Secondly, in terms of resource management, if multiple users jointly manage a computer system, there may be conflicts in the information sharing between the two users. In order to more reasonably allocate the various resource blocks of the computer and coordinate the various components of the computer system, it is necessary to give full play to the functions of the computer operating system and make optimal adjustments to the efficiency and degree of use of each resource block so that each user can All needs can be met. Finally, with the assistance of computer programs, the operating system can abstractly handle various basic functions provided by computing system resources, display operating system functions to users in a visual way, and reduce the difficulty of using the computer.

The operating system mainly includes the following functions:

①Process management, its work is mainly process scheduling. In the case of a single user and a single task, processing The server is exclusive to one task for one user, and process management is very simple. However, in the case of multi-programming or multi-user, when organizing multiple jobs or tasks, it is necessary to solve the problems of processor scheduling, allocation and recycling.

② Storage management is divided into several functions: storage allocation, storage sharing, storage protection, and storage expansion.

③Device management has the following functions: device allocation, device transmission control, and device independence.

④File management: file storage space management, directory management, file operation management, and file protection.

⑤Job management is responsible for processing any requirements submitted by users.

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