AT89X51驱动L289的步进电机驱动电路和代码,含硬件电路,红色和兰色代表步进电机线图,使用二相8拍驱动,有详细注释.-AT89X51 drive L289 Stepper Motor drive circuit and code, including hardware, red and blue charts on behalf of stepper motor using two-phase 8-shot driver, a detailed annotation.