The cathode semiconductor element is an electronic element made of semiconductor material. With the rapid development of electronic technology, various new semiconductor components emerge in an endless stream. Semiconductor components are the core components of various electronic circuits. To learn electronic technology (especially electronic and electrical specialty), we must first understand the basic structure and working principle of semiconductor components, and master their characteristics, parameters and uses. This is very difficult for beginners, because it is new knowledge to them and has never been touched before. Personally, I think learning semiconductor components is a step-by-step process, so don't be too hasty. Listen carefully in class and ask if you don't understand. "Put down your face and take back your achievements."