最底层是屏幕和输入设备驱动程序(关于键盘或鼠标)来与实际硬件交互。
At the lowest level are the screen and input device drivers (as for the keyboard or mouse) to interact with the actual hardware.
只通过语音与计算机交互相比起使用各种硬件输入设备和利用可视反馈监视计算机状态来说，是一项更为艰难的工作。
To interact with a computer solely by voice is much more difficult work t than using various hardware input devices and monitoring the computer state with visual feedback.
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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