Operating system is the necessary software to keep the computer running. It consists of several programs. It has three functions: to manage computer software and hardware resources and make them effectively used; Organize and coordinate the operation of computer components to enhance the processing capacity of the system, provide various practical man-machine interfaces, and provide convenience for users to operate. Operating system software includes five parts: process management, storage management, file management and job management.

Every operating system has a user interface. Users can input commands in one or several ways, and then the operating system sends these commands to the heart of the computer to direct the computer to work. At present, the most mainstream computer operating system is Windows 10.

In addition, database management system and language processing program are also a kind of system software, while file system is the storage format of computer files, not software, such as FAT, FAT32, NTFS and so on.

I hope it can help you solve the problem.