通过对鼠标底层通信原理及协议的深入分析，探讨了鼠标在单片机系统中的应用价值与可行性，并介绍了鼠标接口软件设计的原理及方法，给出了单片机与Microsoft鼠标的具体接口程序。-bottom of the mouse Communication Theory and in-depth analysis of the agreement to explore a mouse in the SCM system of value and viability, and introduced a mous

文首先谈论了IGBT 的驱动电路的基本要求和过流保护分析，然后运用IGBT 集电极退饱和原理，提供了一个采用分立元件构成的IGBT 驱动电路和过流保护电路。仿真 和试验结果证明了所设计驱动电路的可行性-Paper first discussed the IGBT drive circuit of the basic requirements and overcurrent protection, and then use the collector IGBT de-saturation