Source : Free On-Line Dictionary of Computing

A-0
     
         (Or A0) A language for the {UNIVAC I} or II, using
        {three-address code} instructions for solving mathematical
        problems.  A-0 was the first language for which a {compiler}
        was developed.  It was produced by {Grace Hopper}'s team at
        {Remington Rand} in 1952.  Later internal versions were A-1,
        A-2, A-3, AT-3.  AT-3 was released as {MATH-MATIC}.
     
        ["The A-2 Compiler System", Rem Rand, 1955].
     
        [Sammet 1969, p. 12].
     
        (1995-12-03)