使Visual Basic支持RS-485通信的一种简便方法

A Simple Method of Giving Support of RS－485 Communication to Visual Basic

提出了一种使VisualBasic支持RS-485通信的简便方法，即对RS－232／RS－485转换器加以改进，用硬件提供所需的支持。

A simple method of giving support of RS -485communication to Vistal Basic is introduced,which improves RS-232/RS-485 conerter and gives support by hardware.