The input device comprises a plurality of input units, and a plurality of input symbols are correspondingly marked;

输入装置包含多个输入单元，对应标示多个输入符号；

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Like input units, output devices are instruments of interpretation and communication between humans and computer systems of all sizes.

与输入设备类似，输出设备也是人与计算机系统之间实现解释和通信的设备。

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Fortunately, Pioneer was thoughtful enough to include an auxiliary audio input on both units, so 4900 owners can still plug in and play whatever audio device takes their fancy.

ENGADGET: Pioneer announces in-car AVH-P4900 / 5900DVD entertainment systems

Excluding input cost inflation, inventory units were higher by 52% in the third quarter, well outpacing sales growth.

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