Four bits or half a byte, also sometimes spelled "nybble." Since a nibble encodes values from 0 to 
, it can conveniently be represented using a single
hexadecimal digit 0-F.
Nibble
See also
Bit, Byte, Crumb, HexadecimalExplore with Wolfram|Alpha
References
Deitel, H. M. An Introduction to Operating Systems, 2nd ed. Reading, MA: Addison-Wesley, 1989.Referenced on Wolfram|Alpha
NibbleCite this as:
Weisstein, Eric W. "Nibble." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Nibble.html