待完成博文

 1.听到一个说法，VCC是和电源正极相连的，GND是和电源负极相连的。

https://www.sohu.com/a/129149803_610448

2.震荡电路工作原理

https://zhidao.baidu.com/question/47750754.html

https://jingyan.baidu.com/article/4ae03de3c998c63eff9e6b3e.html

https://zhidao.baidu.com/question/583588436792879285.html

https://baike.baidu.com/item/%E6%9C%89%E6%BA%90%E8%9C%82%E9%B8%A3%E5%99%A8/10017869?fr=aladdin

https://www.jzic.com/news_item/6007.html

https://blog.csdn.net/u014137974/article/details/80917099

https://zhidao.baidu.com/question/173496080.html