Every device, including the computer interface board, must have a unique GPIB address between 0 and 30, so that the data source and destinations can be specified by this number.

每一个设备，包括电脑接口板，必须有一个唯一的GPIB地址(0到30之间)，这样数据源和目的地址就可以用这个数字来识别了。

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The on-board ATMega32u4 communicates with your computer using the Human Interface Device (HID) protocol which means that it can act like a keyboard or mouse.

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