On 05/08/15 16:21, Jerry Moore wrote:
My thoughts would be that all devices use the USB instead of RS232. By design the USB is a BUS rather than a point to point protocol as is RS232.
In spite of its name, USB is not a bus. At the physical level, it is most definitely point to point, and, unlike RS232 cannot be abused into a bus configuration.
It does have a network layer, although I think that only supports unicast. RS232 is only a physical layer specification, and not a complete one. Anyone using the internet before ADSL almost certainly was using RS232 as the first hop to a global network.
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