Wikipedia nonsense - bit usage
English
https://en.wikipedia.org/wiki/Bit#Unit_and_symbol the lower-case letter b is widely used as well and was recommended by the IEEE 1541 Standard (2002).
Deutsch
https://de.wikipedia.org/wiki/Bit#Schreibweise das alternative „b“ ist ungebräuchlich.
Widely used vs ungebräuchlich. Spass mit Wikipedia.