Using a small acoustic microphone in the device, vibrations caused by a user scratching or tapping on a tabletop are detected and used as input signals.

通过在设备中使用小型的声学麦克风，用户在屏幕上轻划或是轻拍而产生的震动就能被检测出来并作为输入信号。

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Tablet computers are larger than a smart phone but interact with the user in much the same way, using a touchscreen as a primary input device.

平板电脑比智能手机大，但与同样的方式与用户交互，使用触摸屏作为主要输入设备。

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If the programmer thinks of the user as just another input device, it is easy to forget the proper pecking order in the world of software design.

如果程序员把用户仅仅当做是另一种输入设备，那么在软件设计中就很容易忘记正确的主次关系。

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But for the researchers, the board is simply another interesting low-cost input device for enabling new user interactions, says Matthieu Deru.

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