Computer systems use many devices for input purpose.

计算机系统使用多种输入设备。

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To know the key elements in a computer system include input devices.

进一步通过图片展示计算机各个组成部分的知识。

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To know the key elements in a computer system include input devices.

进一步通过图片展示计算机各个组成部分的知识。

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