DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   FOCAL
      1. FOrmula CALculator.
      An interactive system written by Rick Merrill of DEC in 1969
      for PDP-5 and PDP-8.  It was a descendant of AID/JOSS.
      Versions: FOCAL-69, FOCAL-1971, FOCAL-11 (for PDP-11 under
      RT-11).
      (1994-12-21)
      2. Forty-One CAlculator Language.
      The programming language of the HP-41 calculator line.
      (1994-12-21)