I just got a pic microcontroller running water lamp program. This program can make the MCU running water lamp run. Now I want to burn another program into the MCU to make it run other programs.
However, the two wires of the single-chip microcomputer are connected to the computer, and the port is correct, that is, the program cannot be downloaded. The single-chip microcomputer has been running the previous program, and the digital tube never displays the number, and the stc always prompts that the download failed.
what is the reason? What should I do?