What changes have taken place in the way of information transmission? Short 150 words

In ancient China, before the invention of paper, ordinary "letters" were written in lacquer on a thin wooden board called wooden slips. Later, the letter was written on silk, which was called "ruler element". The earliest envelopes in China were made of wood. In ancient times, it was called "letter" or "envoy", which was called messenger. Special methods include: using signs such as migratory birds, lights and firelight, decorations and signs to lure the enemy.

Modern information transmission, telephone, telegraph, network communication, etc. As far as the communication history of mankind is concerned, the evolution of information communication mode presents such a vein: visual culture, auditory culture (intuitive feeling, "spirit of seeing")-conceptual culture ("spirit of reading")-new audio-visual culture ("new spirit of seeing").

Expanding data information plays a very important role in people's social life. For example, scientific research should not only obtain other people's research results in time, but also publish and tell others their own research results in time. Only by exchanging information with each other can we develop continuously; In the war, it is necessary to obtain the information of the enemy in time and convey various operational orders to the officers and men.

In daily life, we must get timely information about weather, commodities, cultural and sports activities and the work and life of relatives and friends, and often tell them about our work and life. In short, only by constantly exchanging information between people can production, life and other activities be carried out normally, and people can't live without information for a moment.

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