- Thread Starter
- #41
Good, we are here to learn after all.Of course not.
Is it? By definitions offered so far, and according to Wikipedia and other sources, an analogue transmission is a smooth varying signal vs time, as opposed to pulses and codes. Does a digital signal going through wire PCB or any other medium has undefined, unlimited voltage levels?It is just somewhat obvious that a digital signal on an interconnect (wire/cable/fibre/pcb trace etc) is transmitted with analogue signals (values of voltage/current).
Everybody knows, it's obvious .... etc. won't do - can you define precisely what analogue transmission is? And then does digital transmission get covered in that?
What does square wave got anything to do with it? Digital transmission can be modulated in radio waves.There is no such thing as a square wave, they have rise and fall times. The rise and fall are not straight lines, the "top" and "bottom" of the "square" wave are not flat. The transitions from rising/falling edge to top/bottom are not sharp corners.
.... and yet can perfectly be decoded.In fact digital waveforms can (especially at higher speed) look surprisingly close to sine waves.
There you go, you answered yourself.
Perhaps, but does the variation in those voltages carry any encoded information? Or are they by-products of the transmission line inadequacies? Can the digital receiver decode the original data, despite distortions and the noise?In other words, they are continuously varying voltages - different from one moment to the next.
These are the questions I have encountered.
Just give up, you will not win, it is obvious , ...... won't do.