本实例主要实现通过PC机控制多台下位机I/O输出的不同状态来解释不同的命令。本例中控制四个下位



机，当下位机接收到主机地址信息时，下位机返回本机地址，表示接收命令成功，同时根据不同命令



在LED上显示自己本身的地址和命运编码。-Mainly through the implementation of the example of PC-controlled multi-stage bit machine I/O output to explain the different status of different orders. This case under the control of four-bit machine, the current crew to the host address to receive information, the lower back of the machine machine address, said the success of receiving the order, at the same time according to different orders in the LED display on its own address and encoding destiny.