Introduction - If you have any usage issues, please Google them yourself
A key function key recognition technology in our life, we can easily by the name Zhang San, the name is Li Si, another is Wang Wu it is because everyone has a different name, we will soon know, also, for a button to pass to identify the different functions of each different. The ID mark, for we have different functions to each module, each time you press the button, the value of ID is not the same, so SCM is easy to identify the identity of the different functions.