步进电动机是纯粹的数字控制电动机，它将电脉冲信号转变为角位移，即给一个脉冲，步进电机就转一个角度，因此非常合适单片机控制。-Stepper motor is a pure digital control electric motors, electrical pulse signal will be transformed into angular displacement, that is, to a pulse, a stepper motor on the transfer point