第1章计算机组网技术

第一代计算机网络实际上是以单台计算机为中心的远程联机系统。这样的系统除了一台中心计算机外，其他的终端都不具有自立管理功能，在系统中主要是终端和中心计算机间的通讯

(The first generation of computer networks was actually a single computer-centric remote online system. In such a system, except for a central computer, other terminals do not have independent management functions. In the system, the communication between the terminal and the central computer is mainly)

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