Source : Free On-Line Dictionary of Computing

Plankalkul
     
         (Or "Plankalkuel" if you don't have
        umlauts).  The first programming language, designed by {Konrad
        Zuse}, ca. 1945.  Zuse wrote "Rechenplan allgemeiner Struktur"
        in 1944 which developed into Plankalkul.  Plankalkul included
        {arrays} and {records} and used a style of {assignment} in
        which the new value appears on the right.
     
        Zuse wrote Plankalkul for his {Z3} computer (finished before
        1945) and implemented it on there as well.  Much of his work
        may have been either lost or confiscated in the aftermath of
        World War II.
     
        {ESR Plankalkul
        (http://www.tuxedo.org/~esr/retro/plankalkuel/)}.
     
        ["The Plankalkul of Konrad Zuse", F.L. Bauer et al, CACM
        15(7):678-685, Jul 1972].
     
        (2002-05-28)