说明：  学习使用单片机就是理解单片机硬件结构，在汇编或C语言中学会各种功能的初始化设置，以及实现各种功能的程序编制。
(Study is to understand the use of single-chip single-chip hardware structures, or in the compilation of C language to learn the various functions of initialization settings, as well as the procedures for the preparation of various functions.)