(b) Complement your understanding of the operating system

Catalogue (You will learn the knowledge) 1.windows System 2. Mac OS system 3.Linux system 4. Use ratio of each system

1.windows system

As we all know, the Windows system is the most mainstream system, Microsoft Windows is the United States Microsoft company developed a set of operating systems, it was invented in 1985, initially only Microsoft-dos simulation environment, the subsequent version of the system due to Microsoft's Continuous update upgrade, Not only easy to use, but also gradually become the family's favorite operating system.

For more information about the window system, please refer to: Baidu Encyclopedia

(1) The main user group

Mainly for the majority of users, but also to meet the needs of programming, design, there are a small number of Web servers for use.

(2) Official website: https://www.microsoft.com/zh-cn/

(Note: The official website is the charge, but in the folk are through the third party website free access, if experience genuine use, please support genuine)

(3) Private website: https://msdn.itellyou.cn/

(Note: The Windows system is complete in the I-tell-you website, and it is a free system of Microsoft Pure Edition)

In the site download, the first to download the connection to the Thunderbolt, before it can be downloaded.

(4) The current mainstream Windows system

• WINDOW7 currently the first mainstream about 45% of the window system share

• WINDOW10 about a 37% share of the window system, and also the future of Windows

• Window8 about 10% share of the window system, which is said to be limited by compatibility issues.

• Windowxp about 8% of the window system's share, increasingly eliminated

(5) Historical version: (General knowledge can be)

2.Mac OS System

MacOS is the exclusive operating system developed by Apple for the Mac family. MacOS is the pre-installed system for Apple's Mac family of products, with a simple purpose everywhere. The current system version is OS X 10.14, and there are MAC systems running on your PC on the web, called Mac PCs

For more information on Mac OS x systems, please refer to: Baidu Encyclopedia

(1) The main user groups:

Mainly for the design aesthetic requirements are relatively high, the programming environment is also very important.

(1) Official website: https://www.apple.com/cn/macbook-pro/

(Note: Like Microsoft, Apple's operating system is also charged and expensive.) If necessary, please support the genuine. ）

(2) Private website: http://www.pc6.com/pc/OSxtjx/

(Note: Currently feel is relatively complete site, and are free of charge, need to use Baidu Network disk download)

(3) Now the mainstream Mac system

10.10,10.11, 10.12, 10.13 uses a higher occupancy rate. Nature is the most new version of the people who are looking for more, now the latest edition is the 10.14 version.

(4) Historical version: (General knowledge can be)

3.Linux system

Linux is a free-to-use and freely-propagated Unix-like operating system that is a multi-user, multitasking, multithreaded and multi-CPU operating system based on POSIX and UNIX. It can run major UNIX tools software, applications, and network protocols. It supports 32-bit and 64-bit hardware. Linux inherits the design idea of Unix as the core of network, and is a stable multi-user network operating system.

(1) The main user groups:

Mainly for programming developers, especially Web server development, embedded development.

(2) Official website:

• Ubuntu Release: http://releases.ubuntu.com/

  User object: Mainly programming big boys use practice code, develop the program.

  (Note: The latest version of Ubuntu is version 18.04, the updated version is subject to the official website)

• CentOS Release: https://www.centos.org/download/

  User objects: Web server development is used more.

  (Note: The latest CentOS version is version 7.5, the updated version is subject to the official website)

• Kali Linux Release: https://www.kali.org/downloads/

  User objects: Network security testing of the operating system, is also a common tool for hackers.

  (Note: The latest version of Kali Linux is: Version 2018.3a, the updated version is subject to the official website)

4. The use ratio of the system at home and abroad: (1) Domestic use situation:

(2) Use of the world:

(3) Table comparison:

system	WINDOWS	MAC OS	LINUX
Proportion	Approx. 90%	About 6~8%	About 2~3%

I am a Zhang, a computer enthusiast in the undergraduate, look forward to working with you to Exchange computer knowledge, let us in this big time together progress.

(b) Complement your understanding of the operating system