从通信系统角度来看,信息是在通信系统中得到传输、处理和存贮的具有意义的符号聚合体.随着人类活动的进步和提高,社会也高度发展和复杂化,人类的知识和信息将逐渐增多.人类社会活动中有关信息的识别、传递、记录、加工等已经历四个阶段.第一阶段是产生语言,使用语言作为人们之间信息交流的工 From the point of view of communication systems, information is a meaningful symbolic polymer that is transmitted, processed and stored in communication systems.As human activity progresses and advances, societies are also highly developed and complicated, and human knowledge and information Will gradually increase.Human social activities in the identification, transmission, recording, processing has gone through four stages.First stage is to produce language, the use of language as a means of information exchange between people