串口 RS232 标准连接图

RS232 串口公头:

RS232 串口母头:

RS232 互联图:

在设备调试时,经常使用的方法是将 Transmitted Data (Tx) 与 Received Data (RX) 端互联,产生回路。这时,发出的信号马上能够被接受到。

The RS232 STANDARD: http://www.camiresearch.com/Data_Com_Basics/RS232_standard.html


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