Introduction - If you have any usage issues, please Google them yourself
Shorted to the experimental box 232 receiving end of the communication with the sender, P1.0 by a light-emitting diode, preparation of serial spontaneous self-closing (query mode) communication program, check the serial port of the microcontroller is intact, if you send and receive characters consistent P1.0 bright one second off one second shiny Otherwise, P1.0 extinguished. Let fosc = 11.0592MHz, a baud rate of 9600. The 1S delay requirements timer T0.