在实验阶段，为简化调试工作，采用与RS232->USB转换器同属HID设备类的USB接口鼠标联调的方法验证原理设计的正确性。

At period of experiment, the correctness of design is testified by using USB mouse that is belong to HID device class as like RS232->USB converter.

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键盘、视频、鼠标转换器。允许单个键盘，视频监视器和鼠标同时控制多台电脑的硬体设备。

Keyboard, video, mouse switch. it is a hardware device that enables a single keyboard, video monitor and mouse to control more than one computer one at a time.

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