本文结合高职院校中单片机项目教学常用的基本电路和常用扩展电路,设计了一种适合项目教学的单片机实训系统原理电路,并给出了具体的装联和调试方法。该实训系统在教学过程中使用非常方便,能够很好地提升单片机课程的教学质量,降低授课教师的工作强度。通常使用本系统进行单片机项目教学能够完成设计的基本实训项目,学生也能够对单片机系统建立最基本的认识,同时实训系统支持扩展功能,可以使学生的能力得到进一步的提升。 In this paper, the basic circuits and common expansion circuits commonly used in the teaching of single-chip microcomputer in higher vocational colleges are designed in this paper. The principle circuit of single-chip computer training system is designed for the project teaching. The specific method of assembly and debugging is given. The training system in the teaching process is very easy to use, can improve the teaching quality of SCM course, reduce the work intensity of the instructor. This system is usually used to teach SCM project to complete the basic training project design, students can also establish the most basic understanding of SCM system, and training system to support extended functions, can make students’ ability to be further improved.