Teaching video on collecting hands and handles2From easy to difficult, from239Introduction and improvement from 0 to 1, covering digital circuits, C language basics, 51 microcontrollers, and commonly used peripheral modules. Let you lay a solid foundation in your studies and employment with high salaries. Having video tutorials is definitely good,3PDF document books are also essential. Videos are convenient for learning and understanding, while documents are convenient for review and reference. Reviewing the past and learning new things can become a teacher. Novice users can intuitively understand the program operation process, while proficient users can accelerate the project development process and quickly locate fault points. Colour:Photo Color Material:Plastic Package Contents: 1x Single Chip Microcomputer set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.