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Xiaobian to share with you what are the five common computer systems in the computer network, I believe that most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article. Let's learn about it!

The five common computer systems are: 1, DOS, disk operating system; 2, Windows, based on graphical user interface operating system; 3, UNIX, belongs to time-sharing operating system; 4, Linux, is a free use and free dissemination of UNIX-like operating system; 5, Mac OS, is the main operating system of Mac series computers.

Five common computer systems

1 、 DOS

DOS, the abbreviation of disk operating system (English: Disk Operating System), is a kind of operating system on personal computer.

As the name implies, this is an operating system based on disk management. The biggest difference from the operating system we use now is that it is in the form of a command line, which carries out man-machine dialogue by inputting commands, and transmits instructions to the computer in the form of commands to enable the computer to operate.

The DOS family includes MS-DOS, PC-DOS, DR-DOS, FreeDOS, PTS-DOS, ROM-DOS, JM-OS and so on, among which MS-DOS is the most famous. Although these systems are often referred to as "DOS" for short, none of them is simply named after "DOS" (only an unrelated 1960s IBM mainframe operating system is named after it).

In addition, several DOS-independent disk operating systems that run on non-x86 microcomputer systems also have the word "DOS" in their names and are referred to simply as "DOS" in situations devoted to the machine (for example, AmigaDOS, AMSDOS, ANDOS, Apple DOS, Atari DOS, Commodore DOS, CSI-DOS, ProDOS, TRS-DOS, etc.), but these systems are not compatible with DOS executables and MS-DOS API.

2 、 Windows

Microsoft Windows is a series of proprietary commercial software operating systems launched by Microsoft based on graphical user interface. It was first published in 1985 as a desktop environment running under MS-DOS, but its subsequent version gradually developed into an operating system mainly designed for personal computers and server users, and finally gained the monopoly position of personal computer operating systems in the world. This operating system can run on several different types of platforms, such as personal computers (PC), mobile devices, servers (Server) and embedded systems, etc., among which the application in the field of personal computers is the most common.

With the continuous upgrading of computer hardware and software, Windows is also upgrading, from 16-bit, 32-bit to 64-bit, and the system version from the initial Windows 1.0 to the well-known Windows 95, Windows 98, Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10 and Windows Server server enterprise operating systems. Microsoft has been committed to the development and improvement of Windows operating system.

3 、 UNIX

UNIX (non-reusable Information and computer Services, English: Uniplexed Information and Computing Service,UnICS), a multi-user, multi-process computer operating system, originates from AT&T Unix, which was developed in Bell Labs of AT&T Company in the United States in the 1970s.

UNIX operating system, a powerful multi-user, multi-tasking operating system that supports multiple processor architectures, is a time-sharing operating system according to the classification of operating systems. It was first developed by Ken Thompson, Dennis Ritchie and Douglas McIlroy at Bell Labs in AT&T in 1969. At present, its trademark is owned by the International Open Standards Organization. Only the UNIX system that conforms to a single UNIX specification can use the name UNIX, otherwise it can only be called class UNIX (UNIX-like).

4 、 Linux

Linux is a free and open source UNIX-like operating system. The kernel of the operating system was first released by Linus Torvalds on October 5, 1991. with the addition of user-space applications, it became the Linux operating system. Linux is also the most famous example of the development of free software and open source software. As long as you follow the GNU General Public license (GPL), any person or organization is free to use all the underlying source code of Linux, or to modify and redistribute it. Most Linux systems also include programs such as X Window, which provides GUI. With the exception of some experts, most people use the Linux distribution directly, rather than choosing each component or setting it up.

Linux strictly refers to the kernel of the operating system, because the operating system contains many user graphical interfaces and other utilities. Nowadays, Linux is often used to refer to a complete operating system based on Linux, while the kernel is called the Linux kernel. Since these system tools and libraries supporting user space are mainly provided by the GNU project launched by Richard Stallman in 1983, the Free Software Foundation proposes to name its composite system GNU/Linux, but Linux is not part of the GNU project, and the name has not been agreed upon by the community.

5 、 Mac OS

MacOS is a graphical user interface-based operating system launched by Apple and is the main operating system for Macintosh (Mac) computers. Mac OS is the first successful graphical user interface operating system in the commercial field.

MacOS consists of two main parts: the core is called Darwin, which is based on BSD source code and Mach microkernel, developed jointly by Apple and the independent developer community, and a patented graphical user interface called Aqua, developed by Apple.

The above is all the contents of the article "what are the five common computer systems in the computer network?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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