DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   crumb
   quarter
   tayste
      <data, jargon> (Or tayste /tayst/) Silly suggested term for
      two binary digits.
      The term "quarter" has also been suggested, referring to the
      US 25-cent coin.  This was once equal in value to two of the
      eight "bits" - pie-slice-shaped "pieces of eight" - into which
      Spanish silver crowns were cut to make change.
      [Jargon File]
      (2007-05-31)