Introduction - If you have any usage issues, please Google them yourself
Requirements written in C, to achieve C8051F020 UART to PC through data exchange, the microcontroller using an external 22.1184MHz crystal. Required to achieve the function: Uart driver, including initialization, baud rate, single-byte transmit and receive, send the string accept. The program runs to the PC sends the string receives the data to a PC, then the data is sent back to the PC.