> Saul Luizaga wrote:
> 
>>> You never read the USB spec, did you? It's actually rather complex. 
>>> :-) That it's serial is like saying "SATA is serial" or "SONET is 
>>> serial."
>>
>> aren't they? maybe complexfor the very high speeds but AFAK they are 
>> serial techs, similar to PCI-Express.
> 
> USB has a whole communications protocol to go with it. Think about 
> TCP/IP and how complicated that is, and you get some idea of how much 
> work a typical USB device has to do in order to work. Sure, the 
> *physical* signalling is a simple serial bus, but if you want to *do* 
> anything with it... ;-)

And also think of the hundreds of protocols you can talk over TCP.

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