USB and such

[Bert Thomas]

Hans Franke wrote:
> Am 2 Dec 2005 7:47 meinte Cini, Richard:
> 
> *1 - In fact, if I had to design a new system today, I would use
>      USB as a bus structure to be used for add on cards. Simple
>      handling, no interface problems, no electrical problems,easy
>      driver structure and fast enough for almost everything, even
>      including graphics.

Can you by any chance point me in a direction where to find 
documentation about USB? Would I need special licenses to obtain the specs?
I would like to have the hardware programming information.

TIA,

bert