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 creating everything in the universe is information.

The word "information" refers to information in English, French, German and Spanish, information in Japanese, information in Taiwan Province Province and ancient telegrams in China.

As a scientific term, it first appeared in the article "Information Transmission" written by Hatle in 1928. In the 1940s, C.E.Shannon, the founder of information, gave a clear definition of information. Since then, many researchers have given different definitions from their respective research fields. The representative expression is as follows:

Shannon, the founder of information, thinks that "information is used to eliminate random uncertainty", which is regarded as a classic definition and quoted by people.

Norbert wiener, the founder of cybernetics, thinks that "information is the content and name that people exchange with the outside world in the process of adapting to the outside world and making this adaptation react to the outside world", which is also cited as a classic definition.