题目内容
Input and output devices enable people and computer to communicate.
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Input devices translate data and program instructions into a form that computers can process.
Letter input devices, pointing input devices, imaging and video input devices, and audio input devices are four types of input devices.
Soft-copy refers to the image output on a monitor. Hard-copy refers to information output on paper.
In order to save time or total cost, or for specialized application, many devices combine input and output devices.
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