在我们设计单片机电子电路时，常用应用到一下比较常用的电路，每次都需要从新画，即费力又费神，还容易出错，所以本人将自己常用的电路设计成模块，每次使用直接负责即可。由于个人的力量有限，希望大家把自己常用的电路发上来分享。电路难免有错，希望大家指出。(In our design of single chip electronic circuit, commonly applied to a comparison of commonly used circuits, each time from a new painting, which is laborious and demanding, but also prone to error, so I will be used in their circuit design into modules, each use can be directly responsible. Because of the limited power of the individual, I hope you will share your usual circuitry. There is always a mistake in the circuit, I hope you point out.)