Darren New <dne### [at] sanrrcom> wrote:
> Warp wrote:
> >   Sending a raw digital signal over a cable doesn't require modulation.
> > It can be as simple as "no current = 0", "current = 1". 

> Except it's impossible to recognise the difference between "current" and 
> "shouldn't be current but there's minute noise on the line."

> In other words, you need some minimum amount of current before you say it's 
> actually a 1, right?

> And if the current you detect is right on the border between what you 
> consider "zero current" and "one current", then it's not digital. And that 
> happens every time the current goes between a zero and a one.

> Indeed, the whole *reason* for using digital is to make broader swaths of 
> analog come out to the same value. If you actually *could* transmit digital 
> signals, you wouldn't *need* to.

  I have no idea what that has to do with modulation.

-- 
                                                          - Warp

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