What is a computer system?

1, Windows is the operating system with the most users today. It is the first generation windows multitasking system released by Microsoft in June of 5438+0985 1 1. It makes PC enter the era of so-called graphical user interface, which provides great convenience for users and improves the use of computers to a new stage.

2. Since the DOS operating system of 198 1 came out, DOS has undergone seven major version upgrades, from the version of 1.0 to the current version of 7.0, with continuous improvement and perfection.

3.Mac OS operating system Mac OS operating system is the first generation operating system designed by Apple Computer Company of the United States for its Macintosh computer. This model was launched in 1984, and it was the first to adopt some technologies that we are still praising.

4, Unix system Unix system was born in Bell Laboratories in 1969, and was originally used in small and medium-sized computers. UNIX provides users with a time-sharing system to control computer activities and resources, and provides an interactive and flexible operating world.

5.Linux system Linux is the largest free software in the world at present. Its own functions are comparable to Unix and Windows, and its network functions are complete. Its usage is very similar to UNIX.