Understand the operating system (OS)

1. The concept of operating system

Any computer system contains a basic set of programs, called the operating system (OS). In a general understanding, the operating system includes:

Kernel (process management, memory management, file management, driver management) and
other programs (such as function libraries, shell programs, etc.)

2. The purpose of designing the operating system

Interact with hardware, manage all software and hardware resources
, provide a good execution environment for user programs (applications)

3. Positioning

In the entire computer software and hardware architecture, the positioning of the operating system is: to do management work, to do software and hardware management software (hardware: all equipment in the Von Neumann system, software: uninstall and install the software, etc., at the system level: File process, drive)

4. What is an operating system

In order to better understand the operating system, I first take the school management system as an example.

Through the above preliminary understanding, I will further understand the computer system.

5. Operating system management

5.1 What is management

5.2 How to manage

6. Why should there be an operating system

Imagine that the school has only teachers, dormitory aunts, and librarians. There is no dean and principal to manage the school. No one arranges the dormitory and schedules. Then some students’ daily life and study will be chaotic, and the computer needs the management of the operating system. And co-ordination;

In a set of systems, managers need to make overall plans and match up to provide users with a stable and efficient execution environment. Next, manage the software and hardware resources and provide a stable software and hardware environment.