步进电机的控制程序，有四个键来控制：调零键，加角度键，减角度键，运行键。通加减角度达到需要的角度，按运行即可转到需要的角度。单片机是stc89c52-Stepper motor control program, there are four keys to control: zero key, plus the angle button, reducing the angle button, run key. Achieve the required angle through the angl