说明：  本设计采用ATEML公司的mega16 单片机对步进电机进行控制，通过IO口输出的具有时序的方波作为步进电机的控制信号，信号经过芯片L298N驱动步进电机；同时，用键盘来对电机的状态进行控制。
(This design uses the company ATEML S mega16 SCM ATEML stepper motor control, through the IO port output with the timing of the square wave as a stepper motor control signal, the signal through the chip L298N drive a stepper motor the same time, using the keyboard to the motor' s state control.)