【摘要】 采用交互式操作、分布式控制方法实现多媒体电化教学是一种经济实用的教学方法 ,具有使用设备少、操作简单、维护方便等特点 .本文介绍一种具有双向及多种方式控制的多媒体电化教学系统 ,及采用RS - 485接口设计的分布式多机通信的硬件及软件的设计方法更多还原

【Abstract】 With Interactive mode?distributed control means implement multimedia electricity education is an economical and practicable way of teaching; it has a peculiarity of a little use of equipment?briefness of operation?expedience of maintenance. This paper introduces a means of control system of multimedia education with both sides and more control mode, and design of the hardware and software of more computer communications in the use of RS-485.更多还原