I have just started telecommunications in high school Physics. We are currently studying analog to digital conversion. I have 2 questions :
- How is a "digital" signal transmitted? As far as I know, you can turn an analog signal digital by sampling and then applying a restriction with bits. But isn't this just an abstract idea? Or does an actual square wave gets formed that then gets transmitted?
The other question depends on the answer to this one.
- If the answer is yes, a square wave gets forms and that's actually what we transmit: if too many bits are used, that means we can pick tiny fluctuations better. But doesn't this also mean any noise along the way also shows up more?
I am looking for answers for a beginner.