本文详细地介绍了单片机开发的各种应用，从原理到电路连接图到源代码都有体现，很适合初学者和有一定基础的开发者学习。-This paper introduces the development of a variety of microcontroller applications, from theory to the circuit connection diagram to the source code is reflected, it is suitable for beginners and those who have some learning-based development.