中文说明：此代码可以通过将其旋转到左或右高达360角控制的步进电动机非常好。此代码控制四线步进电机通过发送连续的脉冲。我们使用这个代码，它已与机器视觉代码来控制一个网络摄像机。
English Description：
This code can control a stepper motor very well by rotating it to the left or right up to 360 angle. This code controls four wire stepper motor by sending sequential pulse. We used of this code which have been linked with machine vision codes to control a network camera.