基于RS-485总线的病房数显呼叫器的设计

Design of the Digital Calling Machine for Sick-room Based on RS-485 Bus

介绍了一种基于RS485总线的病房数显呼叫器的设计思路和实现方法,详细地介绍了系统的硬件构成和软件设计,并说明了主机和从机之间的通讯方式。

This article introduces a design of the digital calling machine for sick-room based on RS-485 bus,also the hardware constructure and software design of the system in detail, and gives the communication method between master computer and slave computer.