Source : Free On-Line Dictionary of Computing

Single Electron Tunneling
     
         (SET) A New electrical standard for capacitance.
     
        SET devices can be used to construct circuits which process
        information by manipulating individual electrons.  SET devices
        are small, dissipate little power, and can detect exquisitely
        small quantities of charge.  The small size and low power
        dissipation of SET circuits makes them potentially useful for
        the {Information Technology} industry.
     
        (1999-01-06)