论文部分内容阅读
本文介绍了用PC机的并行口与多路RS-422串行口通信的软硬件实现方法。其中包括用PC机并行口输入数据的方法、RS-422串行口通信协议、PC机并行口与RS-422串行口硬件接口电路和软件程序等内容。
This article describes the use of PC parallel port and multiple RS-422 serial port communication hardware and software implementation. Including the PC parallel port input data, RS-422 serial port communication protocol, PC parallel port and RS-422 serial port hardware interface circuit and software programs and so on.