:

  •  
                                                          

    (Barnes) ( . 1946)

    (Barnes) ( . 1946)

    . " " (1985), " 10 " (1989), "" (1992).

    1884-85
    -
    ( . bis - seco - )
    ( ... . kephale - ) ()
    () (Babbage) (1792-1872)
    :