It is the abbreviation of information technology, which refers to the technology related to information. Different people and books have different explanations for this. But basically everyone agrees that it consists of the following three parts:-sensing technology is the extension and expansion of human sensory organs, and the most obvious example is bar code reader; -Communication technology, which is the extension and expansion of human nervous system, undertakes the function of transmitting information; -Computer technology This is the extension and expansion of the function of the human brain, which undertakes the function of processing information. The so-called informatization is to transform other industries and industries with information technology, so as to improve the efficiency of enterprises. In this process, information technology plays the role of a powerful tool.