编写步进电机驱动程序 有了上面的驱动电路，可以方便地写出单片机控制步进电机的驱动程序-The preparation of Stepper Motor Driver with the above drive circuit, can easily write a single-chip stepper motor control driver

半控整流桥控制电机转动,三相交流电经晶闸管组成的半控整流电路，通过电感滤波，驱动直流电机转动，可观察电机转速。-Half-controlled rectifier bridge control of motor rotation, half-controlled rectifier circuit composed of a three-phase AC by thyristor, filtering through the inductor drive DC motor rotation, m

该程序为三相半控整流桥控制电机转动,三相交流电经晶闸管组成的半控整流电路，通过电感滤波，驱动直流电机转动，可观察电机转速。-The program for the three-phase half-controlled rectifier bridge control motor rotation, three-phase AC by thyristor half-controlled rectifier, filtering through the inductor to drive DC m