How many classifications of operating systems are there?

I. Classification of operating systems

There is no single standard for the classification of operating systems.

1, according to the way of working 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 can be divided into: single kernel operating system, microkernel, ultra-microkernel, and external kernel, etc.;

3, according to the environment in which the operation, can be divided into: desktop operating system, embedded operating system, etc.;

4, according to the running environment, can be divided into: desktop operating system, embedded operating system, etc. According to the running environment, it can be divided into: desktop operating system, embedded operating system, etc.

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

Two common operating system examples

1, Microsoft Windows

Microsoft Windows series of operating systems is designed on the basis of Microsoft's MS-DOS to the IBM machine designed graphical operating system. Today's Windows systems, such as Windows 2000 and Windows XP, were created from the modern Windows NT kernel.

2. Mac OS X

macOS, is an operating system that runs on Apple's Macintosh line of computers. mac OS was the first commercially successful graphical user interface system. on June 13, 2016 at WWDC 2016, Apple renamed OS X to macOS, and the current and latest version of the system is 10.14, known as macOS Mojave.

3. Linux

Linux is a free-to-use and freely-distributed Unix-like operating system, a multi-user, multi-tasking, multi-threaded, and multi-CPU-supported operating system based on POSIX and UNIX.

It runs major UNIX utilities, applications, and network protocols. It supports both 32-bit and 64-bit hardware.Linux inherits the network-centered design ideas of Unix and is a stable multi-user network operating system.

4, UNIX

UNIX operating system (Unix), is a powerful multi-user, multi-tasking operating system, supports a variety of processor architectures, according to the classification of the operating system, belongs to the time-sharing operating system, first by KenThompson, Dennis Ritchie and Douglas McIlroy in 1969 developed at AT&T's Bell Labs.

5. Chrome OS

Chrome OS is a PC-based operating system developed by Google. Initially, this operating system will be targeted at netbooks, compact and low-cost computers.

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