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在上一讲中,我们涉及了远程联机系统和计算机互连网络两个概念。作为深一步论述,我们将对几种计算机网络类型进行介绍。要搞好现代商业及大流通事业的电子化,掌握这些基础知识是很必要的。点——点通信最简单的计算机通信是所谓“点对点”。如果距离不远,可用电缆及相关配件将两台计算机的串行通信口(RS232口)连接起来,再配上接收/发送软件,进行简单的数据传输;如果距离很远,则要借助通信媒体
In the previous lecture, we covered two concepts of remote online system and computer interconnection network. As a further discussion, we will cover several types of computer networks. To improve the electronicization of modern business and major circulation, it is necessary to master these basic knowledge. Point-to-point communication The simplest form of computer communication is called “point-to-point.” If not far away, you can use the cable and related accessories will be two computers serial communication port (RS232 port) connected, coupled with the receiving / sending software for simple data transfer; if the distance is too long,