说明：  以实用电子技术为主,内容涵盖电子设计与制作,EDA软件应用,电子工艺,电子元器件等方面,同时它还白日做梦部分设计原文件,譬如原程序,软件流程图,电原理图,等方便大家学习利用之四
(Practical electronic technology mainly covers the design and production of electronics, EDA software applications, electronic technology, electronic components, etc., at the same time it daydreaming part of the design of the original document, for example, the original procedure, the software flow chart, electrical schematics, and other convenient We study the use of four)