摘要
文中提出一种用RS-485串行接口总线和GPIB并行接口总线实现双向通信的方案,该方案是以单片机W77E58为主控器,以uPD7210作为GPIB总线接口驱动芯片,以SN75176作为RS-485串行接口芯片来设计的。首先简要介绍了RS-485和GPIB两种通信总线的特点及应用,然后主要讨论了转换接口的硬件电路原理和软件框图设计。
This paper presents a concept to carry out bidirectional communication between serial interface RS-485 and parallel interface GPIB. This concept uses single chip computer W77E58 as the main controller, uPD7210 as GPIB interface drive chip, SN75176 as RS-485 serial interface conversion chip. First, it intro- duces the characteristics and application of RS-485 and GPIB bus. Then, it mainly deals with the schematic diagram and software flow diagrams of the system.
出处
《信息化研究》
2010年第1期38-40,44,共4页
INFORMATIZATION RESEARCH
