在本系统中，步进电机相应的信号由单片机来产生，根据需要通过按键控制电机的转动方向、转动角度及转动速度。在工作时用数码管来动态显示剩下的步数。所以，软件部分由3模块组成：系统控制信号产生模块、按键扫描及处理模块、显示模块，其程序设计流程图-In this system, the stepper motor corresponding signal from the microcontroller to generate, according to need buttons control the motor rotation direction, rotation angle and rotation speed. At work with a digital control to dynamically display the remaining steps. Therefore, the software in part by three modules: system control signal generation module, keypad scanning and processing module, display module, the program flow chart