1.You can build your own blocks for programming. After setting up the program blocks, we can name the program ourselves,

and then click [Download] to download the program to micro:bit board, as shown in Figure 1.

Or you can download file directly to the computer, and then copy it to the micro:bit U disk, as shown in Figure 2.

Figure 1

Figure 2

2.The indicator light on the back of the micro:bit motherboard will flash during the download. After the download is complete, the indicator light stops flashing and we can see the corresponding experimental phenomena and effects.