基于Proteus，89C51，L297/L298的步进电机原理图和原代码，实现步进电机正反转，加速减速,Based on the Proteus, 89C51, L297/L298 schematic diagram of the stepper motor and the original code, to achieve positive stepper motor to speed up slow down

L297 L298中文资料说明-L297 L298 Chinese Memo walawalawala