Information accelerates communication, expands communication space and improves the efficiency of material wealth creation in the whole society. Mankind is stepping into the information age, and the development of information technology is changing with each passing day, which has penetrated into all fields of society and played an increasingly important role. This paper briefly expounds the function of information technology from several aspects such as office automation, industrial and agricultural development and educational renewal.

In the past 20 years, the high-tech industry represented by the information industry has developed rapidly and played an increasingly important role in the economic activities of various countries. The development of information technology represented by computer technology, satellite communication technology, microelectronics technology, laser technology and robot technology has set off a new wave of technological revolution led by information technology.

Information refers to the objects transmitted and processed through audio, news and communication systems, and generally refers to all the contents spread by human society. People can distinguish different things by obtaining and identifying different information from nature and society, so as to understand and transform the world. In all communication and control systems, information is a common form of communication. 1948, the mathematician Shannon pointed out in his paper entitled Mathematical Theory of Communication that "information is used to eliminate random uncertainty". The most basic unit of the universe to create everything in the universe is information.

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Baidu Encyclopedia: Information "