SED

from Jargon File (4.4.4, 14 Aug 2003)
SED
 /S.E.D/, n.

   [TMRC, from `Light-Emitting Diode'] Smoke-emitting diode. A {friode}
   that lost the war. See also {LER}. [Not to be confused with sed(1),
   the Unix stream editor. --ESR]
    
from The Free On-line Dictionary of Computing (8 July 2008)
Sed

   <tool, text> Stream editor.

   The {Unix} stream editor.  It has a powerful but cryptic
   command language and is based on {regular expressions}.

   There is a {GNU} version called {GNU Sed}.

   [{Jargon File}]

   (1994-11-03)
    
from The Free On-line Dictionary of Computing (8 July 2008)
smoke-emitting diode
SED

   <humour, electronics> (From "{light-emitting diode}") An
   incorrectly connected {diode}, probably a {light-emitting
   diode}, in the process of losing its {magic smoke} and
   becoming a {friode}.

   See also {LER}.

   (1996-04-28)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
SED
       Stream EDitor (Unix)
       
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
SED
       Surface-conducting electron Emitter Display (Toshiba)
       
    

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