Qo you know what is a baud rate?
Y.A.: This i do know. Baud rate is bytes/sec.
Well, it's erroneous to call
baud rate as bytes per second or bits per second.
1 Baud is 1 Data unit or 1 Symbol unit.
If a data unit is composed by 8 bits (or 1 byte), then 1 baud is 8 bits or 1 byte.
If a data unit is composed by 16 bits, then 1 baud is 16 bits.
If a data unit is composed by 20 bits, then 1 baud is 20 bits.
It all depends on the communication protocol used.
So baud rate = data unit rate = symbol unit rate = a given quantity of bauds transmitted on a given time.
Qo you know how high frequencies behaves in PCB trails? And in a round conductor, like a wire?
Y.A:I think i experience this once. Doesn't it act like an antenna? Producing noise?
Well, if you put AC or pulsed DC in a wire, it will act as an antenna. So it is not the expected answer.
The expected answer is that higher the frequency, more superficially it "travels" inside the conductor.
Take a look.
Each circle represents a transversal cut of a solid conductor.
Blue = "used" space.
White = "unused" space.