USB : Overview    USB Is Like A Railroad  

This Master/Slave relationship between the PC or "Host" (Master) and the peripheral (Slave) means that the USB hardware on each end is very different.

A USB peripheral device does not have the right kind of USB hardware to command another USB peripheral, so please don’t expect to be able to turn your microcontroller-based USB peripheral device into something that can control another USB device like a printer. It can’t happen.


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