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The operating system is a program that manages computer hardware and software resources, and is also the kernel and cornerstone of the computer system. The operating system is a huge management control program, which includes five aspects of management functions: process and processor management, job management, storage management, device management, and file management.

①Microsoft Windows：The Microsoft Windows operating system is an operating system developed by Microsoft Corporation of the United States. It was introduced in 1985. Windows uses a graphical mode GUI, which is more user-friendly than the way DOS used to type commands.②Linux：Linux is a free-to-use and freely distributed Unix-like operating system. It is a multi-user, multi-tasking, multi-threaded and multi-CPU based operating system based on POSIX and UNIX. It can run major UNIX tools, applications and network protocols.③Android：Android is a Linux-based free and open source operating system. Mainly used in mobile devices such as smartphones and tablets, led and developed by Google and the Open Handset Alliance.④iOS：iOS is a mobile operating system developed by Apple. Apple first announced the system at the Macworld conference on January 9, 2007, originally designed for the iPhone, and later applied to iPod touch, iPad and Apple TV.

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👤 Author: by 1798570839qqcom 2019-09-11 15:24:45