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This article mainly introduces the five main functions of the operating system in the computer, which are very detailed and have a certain reference value. Friends who are interested must finish reading them.

The five functions of the operating system: 1, processor management; 2, memory management; 3, device management; 4, file management; 5, job management, an independent operation that each user requests the computer system to complete is called a job.

Five major functions of the operating system:

1. Processor management

The most basic function of processor management is to handle interrupt events. After the operating system is configured, various events can be handled. Another function of processor management is processor scheduling, which adopts different scheduling strategies for different situations.

2. Memory management

Memory management mainly refers to the management of internal memory. The main task is to allocate memory space to ensure that the storage space occupied by each job does not contradict and that each job does not interfere with each other in its own storage area.

3. Equipment management

Equipment management refers to the management of all kinds of peripherals, including allocation, start-up and fault handling. The main task is that when users use external devices, they must put forward requirements and wait for the unified allocation of the operating system before they can be used.

4. File management

File management refers to the management of information resources by the operating system. In an operating system, the part of management information responsible for access is called a file system. File management supports operations such as file storage, retrieval and modification, as well as file protection functions.

5. Job management

Each user requests the computer system to complete an independent operation called a job. Job management includes job input and output, job scheduling and control, which controls the operation of jobs according to the needs of users.

Extended data:

1. Classification of operating systems:

(1) according to the working mode, it is divided into batch operating system, time-sharing operating system, real-time operating system, network operating system and distributed operating system.

(2) according to the architecture, it can be divided into single-kernel operating system, multi-kernel operating system and so on.

(3) according to the running environment, it can be divided into desktop operating system, embedded operating system and so on.

(4) according to the length of the instruction, it is divided into 8bit, 16bit, 32bit and 64bit operating system.

2. Operating system is not only the computer program that manages computer hardware and software resources, but also the core and cornerstone of computer system. The operating system needs to deal with basic tasks such as managing and configuring memory, determining the priority of supply and demand of system resources, controlling input and output devices, operating networks and managing file systems. The operating system also provides an interface that allows users to interact with the system.

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