mcu与pc串口设计，Proteus仿真图+程序-mcu and design pc serial, Proteus simulation map+ program

程序功能：MCU不停向PC机发送数据,在屏幕上显示0~127对应的ASCII字符 -Program features: MCU stop sending data to the PC, the screen display from 0 to 127 ASCII characters corresponding program features: MCU stop sending data to the PC, the screen c

接收来自PC机的字符，然后重新发送给PC机打开串口调试助手，正确设置通信格式，向学习板发送字符，观察MCU回发的字符-Receives a character from the PC, and then re-sent to the PC serial debugging assistant opens correctly set the communication format, send characters to the lear