该系统产生的电流为直流电，所以用来驱动本地的直流点装置比将其转化为交流电输入电网来的更有效率。
The system generates a direct current, so using it to power DC devices locally is more efficient than switching to the alternating current needed to feed it back to the grid.
数据由称为硬件的专门设备来处理，这些设备包括输入装置，系统单位装置以及二级存储装置。
Data is processed by specific equipment that is often called computer hardware. This equipment consists of input devices, a system unit devices, and secondary storage devices.
声音输入装置把人的声音转变为计算机能识别和处理的信息，并把此信息送入计算机系统中。
An audio input device transforms the man voice into information that can be recognized and processed by the computer to which the information is transmitted.
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