说明：  昨晚自己画的图和用C51写的程序。程序比较简单，对工程师级别的可能没有什么用，但对学徒还是有点帮助的。 电路和程序实现了如下功能： 1.两个步进电机的运行和停止可以单独控制。 2.两个步进电机的正反转可以单独控制。 3.可以调节转速(不能单独调速) 4.具有上限位和下限位。
(Last night, painting their own charts and written procedures with C51. Procedure is relatively simple to engineer level may not be what is the use, but the apprentice is still somewhat helpful. Circuit and procedures to achieve the following functions: 1. Two stepper motor operation and control can be stopped. 2. Two stepper motor control can be positive. 3. It can adjust the speed (governor alone can not) 4. With the upper limit and lower-bit-bit.)