USB : Overview    USB Is Like A Railroad  

Let ’s keep our railroad analogy going a little longer. For the moment, we don’t need to worry about the details of how to write those specs, but it would be helpful to know some general information about what we can ask the Freight Manager to grant us.

How much we want to ask for depends on how much freight (data) we need to ship, what kinds of freight we need to send in each direction, when it needs to get to its destination, as well as how many and what kind of destinations we have.


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