如何在USB上改变电压并使用C或C ++编程检测usb上的变化电压

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I was thinking over to send some data from my PC to some other PC using Radio Frequency (88-108 MHz) . Radio transmitter for sending & detector for receiving using some customized protocols. '1'-frequency & '0'- no frequency (at constant frequency). Here 1 & 0 are binary data converted from original data to be sent . I was thinking over to send some data from my