键盘是计算机的主要输入设备。
键盘是计算机的主要输入设备。鼠标也是一种输入设备。
The keyboard is the computer's main input device. The mouse is also a type of 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。
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.
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