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This article will explain in detail what the operating systems in the computer are, and the editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Operating system (Operating System, referred to as OS) is a computer program that manages and controls computer hardware and software resources. It is the most basic system software that runs directly on "bare metal". Any other software can only be run with the support of the operating system.

The operating system is not only the interface between the user and the computer, but also the interface between computer hardware and other software. The functions of the operating system include managing the hardware, software and data resources of the computer system, controlling the operation of programs, improving the man-machine interface, providing support for other application software, and making all the resources of the computer system play a role to the maximum. Provide various forms of user interface, so that users have a good working environment, and provide necessary services and corresponding interfaces for the development of other software.

In fact, the user does not have to touch the operating system, which manages the computer hardware resources and allocates resources according to the resource requests of the application, such as dividing CPU time, opening up memory space, calling printers and so on.

Expansion materials:

Typical system

Operating system UNIX

UNIX is a powerful multi-user, multi-task operating system, which supports multiple processor architectures. According to the classification of operating systems, it belongs to time-sharing operating system. UNIX was first developed by Ken Thompson and Dennis Ritchie in 1969 at Bell Labs in AT&T, USA.

Unix-like (Unix-like) operating system refers to all kinds of traditional Unix and systems similar to traditional Unix. Although some of them are free software and some commercial software, they all inherit the characteristics of the original UNIX to a considerable extent, have many similarities, and comply with the POSIX specification to a certain extent. Unix-like systems can run under a large number of processor architectures and have a high utilization rate on server systems, such as colleges and universities or workstations for engineering applications.

Operating system Linux

Linux-based operating system is a multi-user and multi-task operating system introduced in 1991 in the 20th century. It is fully compatible with UNIX. Linux is originally a kernel program of an operating system based on UNIX developed by Linus Torvalds, a computer major student of Helsinki University in Finland. Linux is designed to be used more effectively on Intel microprocessors. It was subsequently released under the GNU General Public license at the suggestion of Richard Stallman and became a variant of the free software Unix. Its biggest feature is that it is a free and open source operating system with open source code, and its kernel source code can be freely distributed.

After several years of overcoming difficulties, the free and open source Linux system has gradually eroded the professional field of patented software in the past. For example, the IRIX system of the former computer animation computing giant ── SGI has been replaced by Project 9 and Inferno system designed by the Linux family and the Bell Labs R & D team, both for decentralized expression environments. Unlike other Unix systems, they choose to have their own graphical user interface. Plan 9 was not popular because it was not free software when it was first launched. Linux has various distributions, usually GNU/Linux, such as Debian (and its derivative systems Ubuntu, Linux Mint), Fedora, openSUSE, and so on. As a personal computer operating system or server operating system, Linux distribution has become the mainstream operating system on the server.

Operating system Mac OS X

Mac OS is an operating system that runs on Apple's Macintosh series of computers. Mac OS is the first successful graphical user interface in the commercial world. The Macintosh group included Bill Atkinson (Bill Atkinson), Jeff Ruskin (Jef Raskin) and Andy Herzfeld (Andy Hertzfeld). Mac OS X was first launched in shopping malls in 2001. It consists of two main parts: Darwin, which is an open source environment similar to Unix based on BSD source code and Mach microcore.

About what the operating system in the computer has to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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