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elevator controller

elevator controller: n. An archetypal dumb embedded-systems
   application, like toaster (which superseded it).  During one
   period (1983--84) in the deliberations of ANSI X3J11 (the
   C standardization committee) this was the canonical example of a
   really stupid, memory-limited computation environment.  "You can't
   require `printf(3)' to be part of the default runtime library
   --- what if you're targeting an elevator controller?"  Elevator
   controllers became important rhetorical weapons on both sides of
   several holy wars.