说明：  非常难得的一本好书，详细介绍了基于51单片机控制各种电机如步进电机、异步电机等的电路设计、程序控制方法。
(Very rare a good book, detailing the 51 microcontroller-based control of various motors such as stepper motors, asynchronous motors, etc. circuit design, process control methods.)