With the rapid development of modern science, radio, fixed telephone, mobile phone, Internet and even video telephone have emerged. Communication technologies shorten the distance between people, improve the efficiency of the economy, and profoundly change the way of life and social outlook of human beings.
Communication has different interpretations in different environments. After the emergence of radio transmission Communication, Communication is simply interpreted as the transmission of information. It refers to the transmission and exchange of information from one place to another, and its purpose is to transmit messages.