基于89C51单片机的四相六线步进电机控制系统，可以按键实现电机的起停，正反转及三级速度控制，并有led灯指示-89C51 microcontroller based four-phase six-step motor control system that can achieve the motor start and stop buttons, Reversible, and three speed control and have led indicator light

通过89C51单片机对电力行业控制器的研究，步进电机调速。-Controller of Power Industry，stepper motor speed control system.