基于STC89C51单片机的步进电机驱动程序，步进电机采用28BYJ的四相五线步进电机，驱动芯片采用ULN2003，通过检测电平可实现步进电机正转反转。-STC89C51 microcontroller based stepper motor driver, stepper motor with 28BYJ four-phase five-wire stepper motor driver chip ULN2003, the detection level can be achieved by a stepper motor forward reverse.