说明：  这个是单片机最小系统的一个介绍文档以及altium仿真原理图（介绍了最常用的系统模块），我觉得对于初学者而言，会有参考的作用，希望对大家有用！！
(This is the smallest single-chip systems, as well as an introductory document altium schematic simulation (to introduce the most commonly used modules), I think for beginners, the role of reference, useful for all of us hope! !)