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toaster (which superseded it).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