A unit of information in computer science, equal to 2 bits. The unit is thought to have originated at IBM in the early 1980s. There are 2 crumbs in a nibble
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}