说明：  该文件电子电路大全，详细介绍了电子电路的设计方法与技巧，并有很详细的实例介绍，给大家系统地介绍了模拟与数字电路的设计。
(The file electronic circuit Daquan details the methods and techniques of electronic circuit design, and detailed examples to give a systematic introduction to the design of analog and digital circuits.)