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本文介绍局部网络中一种多路器的设计与实现。这种多路器可方便地连接具有异步串行接口的计算机或终端、打印机等各种外部设备,使用灵活且成本低廉。本文在简述多路器的主要功能和工作原理及国内外有关工作基础上,叙述了我们自行研制的一种用于局部网络的多路器硬、软件结构和功能。目前它用于剑桥环系统中,作适当修改后也可用于其它局部网络中。
This article describes the design and implementation of a multiplexer in a local network. This multiplexer makes it easy to connect computers, terminals, printers, and other external devices with an asynchronous serial interface for flexible and cost-effective use. Based on the brief introduction of the main functions and working principle of the multiplexer and related work both at home and abroad, this paper describes a hardware and software structure and function of the multiplexer developed by ourselves. It is currently used in Cambridge ring systems and can be used in other local networks if properly modified.