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局部网的重要性日益增长是由于计算机、文字处理机、图形终端和诸如语音传输一类设备之间的互连会越来越普遍,工作站之间的信息传输也将成为基本的要求。这种系统导致综合通信的产生,即把数据与文字
The growing importance of local networks is due to the increasing prevalence of interconnections between computers, word processors, graphics terminals and devices such as voice transmission, and the transmission of information between workstations will also be a basic requirement. This system leads to the generation of integrated communications, that is, to data and text