You need to use the downloader and download the software to burn the hexadecimal file output by keil program to the single chip microcomputer. Please refer to the following steps for specific operation, and demonstrate that the single chip microcomputer is 5 1.

1. First prepare the minimum system board and programming device of 5 1 single chip microcomputer.

2. Open stc-isp burning software and select the model of single chip microcomputer. The model of single chip microcomputer chosen here is STC89C/LE52RC. Here you can observe that the "serial number" shows that there are no interfaces available.

3. Then connect the programmer with the minimum system of 5 1 single chip microcomputer and insert it into the computer.

4. After the computer recognizes the serial number (COM 10), select and click "Open Program File" to import the target hexadecimal file.

5. Then click the "Download" option, and you can see that the display box in the lower right corner of the software interface shows "Detecting the target MCU ...".

6. Then power on the microcontroller again. Soon after, the display box in the lower right corner of the software interface showed "Shake hands again ... succeeded". After completing the above settings, you can complete the burning program of the single chip microcomputer.