You wrote that it was difficult, but you gave it 5 stars!!! Thank you for the course review. Since it mainly covers content for those who are designing digital circuits, the difficulty level is... Please understand. It's the easiest content among the lectures I'm giving. ㅠ.ㅠ The practical part is even more difficult. However, if you watch it several times and try coding, I think there will come a day when it becomes easier. Fighting :)