以单片机为内核的小功率步进电机速度控制器。单片机接受来自RS232的速度控制指令，通过单片机转换成步进电机的走步脉冲，同时对2只步进电机的连续速度控制。要求讨论速度与走步脉冲的关系，并实现加速、减速和恒速工作。-SCM as a core with low power stepper motor speed controller. Microcontroller to accept the speed control commands from the RS232, through the microcontroller walking into stepper motor pulses, while two consecutive stepper motor speed control. Call for debate on the relationship between speed and walking pulse and achieve acceleration, deceleration and constant speed of work.