A keyboard is a requisite hardware device of a computer. It is an input device used most commonly, and a dialogue tool between a man and a computer.

键盘是计算机的一个必不可少的硬件设备，也是最常用的一种输入设备，是人与计算机的对话工具。

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Keyboard: a keyboard is an input device of a computer.

键盘是计算机一种输入设备。

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A mouse is an input device used most commonly besides keyboard.

鼠标是除键盘之外最常用的输入设备。

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Connect any and all of it with an alligator clip and you have an input device.

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Formed seemingly from a single block of Lucite, the new mouse looks more like a drop of mercury than an input device.

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With an input device that allows players physically to interact with games, the Wii has been yet another runaway success, selling almost as many consoles as the Xbox 360 and Playstation 3 combined.

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