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Software is simply a thing that can be seen in a computer, but it can't be touched. The conceptual software is also called "soft device". Broadly speaking, software refers to the program in the system and the development and use. The collection software for all the documents required by the program is divided into system software and application software. Software does not just include programs that can run on a computer, and files associated with those programs are generally considered part of the software. Software is used in all areas of the world and has a profound impact on people's lives and work.

system software. The system software is responsible for managing the various independent hardware in the computer system so that they can work together. System software allows computer users and other software to treat the computer as a whole without having to worry about how the underlying hardware works. In general, system software includes the operating system and a set of basic tools (such as compiler, database management, memory formatting, file system management, user authentication, driver management, network connectivity, etc.).

application. Application software is software that is developed for a specific purpose. It can be a specific program, such as an image viewer. It can also be a collection of programs that are closely related and can work together, such as Microsoft Office software. It can also be a huge software system consisting of many independent programs, such as a database management system. More common are: word processing software such as WPS, Word, etc.; information management software; auxiliary design software such as AutoCAD; real-time control software; education and entertainment software.