基于51单片机的出租车计价器设计，其中也包含源程序代码，仿真测试成功运行。

VB与串行通信编程实例：单片机采用了51单片机，多机通信中采用了利SM2来区分是数据还是地址，效果还可以。其中RS485部分采用了隔离转换电路，采用高速光耦6N137-VB and serial communication programming examples: single-chip microcontroller with a 51, multi-machine communication using Lee SM2 to distinguish the data or address,

51单片机的模块，请大家参考，完全准确~请大家谨慎使用，多多研究-51 single-chip modules, please refer to completely and accurately ~ please be used with caution, a lot of research