What are the five major functions of the operating system?

The five major functions of the operating system: 1. Processor management; 2. Memory management; 3. Device management; 4. File management; 5. Job management, each user requests an independent operation completed by the computer system It's called a job.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

Five major functions of the operating system:

1. Processor management

The most basic function of processor management is to handle interrupt events and configure operations Once the system is installed, various events can be processed. 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 there is no conflict in the storage space occupied by each job, and to prevent each job from interfering with each other in its own storage area.

3. Device management

Device management refers to the management of various peripheral devices, including allocation, startup and fault handling. The main task is that when the user uses an external device, he or she must make a request, and it can only be used after the operating system has uniformly allocated it.

4. File management

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

5. Job management

An independent operation that each user requests the computer system to complete is called a job. Job management includes job input and output, job scheduling and control, which controls job running according to user needs.

Extended information:

1. Classification of operating systems:

(1) According to the working method, it is divided into: batch operating system , time-sharing operating system, real-time operating system, network operating system and distributed operating system, etc.;

(2) According to the architecture, it can be divided into: single-core operating system, multi-core operating system, etc.;

(3) According to the running environment, it can be divided into: desktop operating system, embedded operating system, etc.;

(4) According to the length of the instruction, it can be divided into: 8bit, 16bit, 32bit, 64bit operating system.

2. The operating system is a computer program that manages computer hardware and software resources. It is also the core and cornerstone of the computer system. The operating system needs to handle basic tasks such as managing and configuring memory, prioritizing the supply and demand of system resources, controlling input and output devices, operating networks, and managing file systems. The operating system also provides an operating interface for users to interact with the system.

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