One baud is defined as the state of a signal in a communication channel changing once per second.
Baud
See also
Baud Rate, Bit RateThis entry contributed by Shaun Rogers
Explore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W., with contributions by Shaun Rogers. "Baud." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Baud.html