Input devices include keyboards and pointing devices such as mouse, joystick, track ball, or light pen.

输入设备包括键盘和点击设备如鼠标，操纵杆，跟踪球或光笔。

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Input devices include keyboards and pointing devices such as mouse, joystick, track ball, or light pen.

输入设备包括键盘和点击设备如鼠标，操纵杆，跟踪球或光笔。

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