An archetypal dumb embedded-systems applICation, like toaster (whICh superseded it). During one period (1983--84) in the deliberations of ANSI X3J11 (the C standardisation 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 run-time library - what if you' re targeting an elevator controller?" Elevator controllers became important rhetorICal weapons on both sides of several holy wars.