功能：在pc上，利用纯软件实现51单片机的串口的输入输出仿真，

用到的软件：keil、proteus、虚拟串口及串口调试助手。



1.pc上安装 虚拟串口 然后将com3和com4连接起来

2.pc上运行 串口调试助手，设置： com4 9600 N 8 1

3.pc上安装 proteus软件

4.运行例程中的 simulate_proteus6.7文件，即可实现串口调试-Function: On the pc, the use of pure software 51 microcontroller serial input and output simulation,

Software used: keil, proteus, virtual serial port and serial debugging assistant.



Virtual serial ports installed on 1.pc com3 and com4 then connect

2.pc run on serial debugging assistant, set: com4 9600 N 8 1

3.pc proteus software installed

4. Run the routine simulate_proteus6.7 file, you can achieve serial debugging