"This is a lecture I would like to recommend to those who want to easily understand embedded infrastructure technology and ARM operating principles. When a compilation error occurs, I feel psychologically discouraged, and if it is not C grammar but a strange command that I have never seen before, I get even more stressed. After taking this lecture, I was able to handle such errors more leisurely. It is easy to understand because the key content is divided into short sections and explained with practice. Even if you do not directly handle ARM commands in practice, you will be able to approach problem solving from a more diverse perspective because you know the basic technology of the processor that you learned in the lecture. Thank you for making this lecture^^