The chips are bought because they need to be burned to make them work.
An integrated circuit such as a chip receives an encoded instruction at one or more ends, executes this instruction, and outputs a signal describing its state. These instructions can be entered internally, centralized, or stored. Chip operation requires programs, and the process of storing these programs into the chip is chip burning. Burning and burning are basically similar, but the carrier is different.
There are many kinds of chips, only a few programmable chips need to burn, and the vast majority of chips do not need to burn
The chip is used to run the program, you need to burn the program to work.