Communication has different interpretations in different environments. After the appearance of radio wave transmission communication, communication is simply interpreted as the transmission of information, which refers to the transmission and exchange of information from one place to another, and its purpose is to transmit messages. However, communication is in the process of human practice with the development of social productive forces and the continuous improvement of the requirements for message transmission, which makes the continuous progress of human civilization. In a variety of communication methods, the use of "electricity" to transmit messages communication method called Telecommunication (Telecommunication), this communication has the characteristics of rapid, accurate, reliable, and almost free of time, place, space, distance restrictions, so it has been rapid development and widely used; Nowadays, due to the rapidity of radio waves, the physical communication (postal communication), which has been continuously accumulated and improved in the process of material exchange of ancient human beings combined with cultural exchanges and real economy, is understood by human beings as an obstacle to economic development.
In ancient times, human beings transmitted information through post stations, flying pigeons, beacon fire alarms, symbols, body language, eye contact, and other ways.
With the rapid development of modern scientific level, various communication methods such as radio, fixed telephone, mobile telephone, Internet and even video telephone have appeared one after another. Communication technology has narrowed the distance between people, improved the efficiency of the economy, and profoundly changed the way of life and social landscape of mankind
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