Introduction - If you have any usage issues, please Google them yourself
Singlechip C language learning good basic knowledge of information Preface 2: Single-chip programming based on 2 Section I: Single-button digital tube display 4 Section II: dual digital tube 6 adjustable stopwatch III: traffic lights at a crossroads 6 4: digital tube drive 7 Section V: 8 of section VI of the keyboard driver: low-frequency frequency meter 14, Section VII: Electronic Table 17 in section VIII: Application of the serial port 17