In a computer system, what is an operating system?

In a computer system, the operating system is the core system software; other systems must run on the basis of the operating system. The operating system is a group of computers that supervises and controls the operation, use and operation of hardware, software resources and provision of hardware and software. Public services organize user interactions with associated system software programs.

The operating environment of this tutorial: Windows 10 system, DELL G3 computer.

In a computer system, what is an operating system?

In a computer system, the operating system is the core system software.

The operating system is the first layer of software covering the hardware. It is a special system software, which is the core system software. Other system software must run on the basis of the operating system.

Operating System (English: Operating System, abbreviation: OS) is a group of computers that supervises and controls computer operations, uses and runs hardware and software resources, and provides public services to organize users Interactive, interrelated system software programs. According to the operating environment, operating systems can be divided into desktop operating systems, mobile operating systems, server operating systems, embedded operating systems, etc.

In a computer, the operating system is the most basic and important basic system software. From the perspective of a computer user, the computer operating system embodies the various services it provides; from the perspective of a programmer, it mainly refers to the interface or interface for user login; from the perspective of a designer, it refers to Connections between various modules and units.

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The operating system (OS) is part of the software. It is the first layer of software based on the hardware. It is a bridge between hardware and other software (or interface, middleman, intermediary, etc.).

The operating system controls the running of other programs, manages system resources, and provides the most basic computing functions, such as managing and configuring memory, determining the priority of system resource supply and demand, etc., and also provides some basic service programs, such as ：

• 1) File system

provides a structure for computer storage of information. Information is stored in files. Files are mainly Stored on the computer's internal hard drive, files are organized in a hierarchical structure of directories. The file system provides the operating system with a way to organize and manage data.

• 2) Device driver

# Provides an interface to connect each hardware device of the computer. The device driver enables the program to Ability to write to devices without knowing the details of each hardware implementation. To put it simply, it allows you to eat eggs without raising a chicken.

• 3) User interface

The operating system needs to provide users with a way to run programs and access the file system . For example, the commonly used Windows graphical interface can be understood as a way for users to interact with the operating system; the Android or iOS system of smartphones is also a way for the operating system to interact.

• 4) System service program

When the computer starts, many system service programs will automatically start to perform installation File system, start network services, run scheduled tasks and other operations.

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