In industrialized countries, information is generally regarded as an important resource for social productive forces and national economic development, and the information industry is regarded as the core of all industries and called the fourth industry.
There is no unified model for the classification of information industry in China, which can generally be considered as including seven aspects: first, the production and sales of microelectronic products; Second, the development, research and sales of electronic computers, terminal equipment and their supporting software and hardware; Third, various information materials industries; The fourth is the information service industry, including information data, retrieval, inquiry and business consultation; Fifth, the communications industry, including computers, satellite communications, telegrams, telephones and postal services. Sixth, information technology and various manufacturing industries and management; Seventh, entertainment programs and books and information of mass media.