@jaytor sed:I think what @rixthetrick was getting at is that any signal on a cable is inherently analogHow’s that? With all due respect, do you actually understand what makes analog signals analog and how digital signals are different. ABout the only similarity is that they can both use wire as a transport media. If a car operates on roads and a elephant walks down the same road, does that make the elephant a car?
It depends on how you look at it. "The only similarity is that they can both use wire" isn’t quite right.
Digital is by definition binary.... high/low, 1/0, true/false, whatever. Electrically, those 2 states can be represented by 2 different frequencies, 2 phases, etc. . With USB those 2 digital states are 2 voltage levels. Analog information is represented by constantly changing voltage levels with an infinite number of possibilities.
So yes, they are the same in that both analog and digital information are represented by voltage levels. Since the digital voltage level can’t change instantaneously (a perfect square wave) it bears some resemblance to an analog signal’s infinite voltage levels.
However, does any of that really matter? With analog, errors are a given. It is impossible to maintain 100% accuracy throughout the analog chain. On the other hand, digital errors are very, very low and in a well designed system, for all practical purposes they are zero.
In any case, it is a red herring that distracts from the topic of whether or not USB sucks
BTW.... it does not
