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一、系统概述 85年我们接受了新华通讯社提出的关于新闻稿件发稿远程传输系统的设计和研制任务。本系统是以PC/XT微型机为基础,使用了两块共有八个标准的RS232口扩展板,加上自行设计的通讯软件实现了多路远程传输的任务。由于新华社在全国各地拥有众多的分社和报社,每天要向各地传送大量的新闻稿件。因此,希望PC/XT能同时带多个RS232口工作。当时IBM-PC机的选件中最多只能在一块板上支持两个
I. System Overview In 1985, we accepted the design and development tasks of the long-distance transmission system submitted by Xinhua News Agency on press releases. The system is based on the PC / XT microcomputer, using two total of eight standard RS232 port expansion board, coupled with its own design of communication software to achieve the remote transmission of multiple tasks. Since Xinhua News Agency has a large number of branches and newspapers throughout the country, it has to send a large number of press releases daily to various places. Therefore, I hope PC / XT can work with multiple RS232 ports at the same time. At that time IBM-PC option can only support up to two in a board