通过该实验，您可以了解在MicroBlaze系统中I/O引脚作为通用输入的使用方法，掌握单向输入I/O口的特性，在编程上要掌握如何进行对按键的扫描检测并执行相应动作。-Through the experiment, you can find in the MicroBlaze system using I/O as general input pin, grasp the characteristics of one-way input I/O port, in the programming