Source : Webster's Revised Unabridged Dictionary (1913)

Noddy \Nod"dy\, n.; pl. {Noddies}. [Prob. fr. nod to incline the
   head, either as in assent, or from drowsiness.]
   1. A simpleton; a fool. --L'Estrange.

   2. (Zo["o]l.)
      (a) Any tern of the genus {Anous}, as {A. stolidus}.
      (b) The arctic fulmar ({Fulmarus glacialis}). Sometimes
          also applied to other sea birds.

   3. An old game at cards. --Halliwell.

   4. A small two-wheeled one-horse vehicle.

   5. An inverted pendulum consisting of a short vertical flat
      spring which supports a rod having a bob at the top; --
      used for detecting and measuring slight horizontal
      vibrations of a body to which it is attached.

Source : Free On-Line Dictionary of Computing

noddy
     
        /nod'ee/ [UK: from the children's books] 1. Small and
        un-useful, but demonstrating a point.  Noddy programs are
        often written by people learning a new language or system.
        The archetypal noddy program is {hello, world}.  Noddy code
        may be used to demonstrate a feature or bug of a compiler.
        May be used of real hardware or software to imply that it
        isn't worth using.  "This editor's a bit noddy."
     
        2. A program that is more or less instant to produce.  In this
        use, the term does not necessarily connote uselessness, but
        describes a {hack} sufficiently trivial that it can be written
        and debugged while carrying on (and during the space of) a
        normal conversation.  "I'll just throw together a noddy {awk}
        script to dump all the first fields."  In North America this
        might be called a {mickey mouse program}.  See {toy program}.
     
        3. A simple (hence the name) language to handle text and
        interaction on the {Memotech} home computer.  Has died with
        the machine.
     
        [{Jargon File}]