This in is a tradition of earlier simulated ("cardboard") computers such as the 1965 "Little Man Computer" or the 1968 CARDIAC. Like Ordinapoche, they were basically aids to help a person step through a machine language program, with the person performing the low-level actions themselves.
Yes, very funny. But they knew what they were doing when they named it that. There was a series of early computers named ILLIAC (because they were created at the University of Illinois and after ENIAC, a famous computer that was "the first" digital programmable computer by some definitions of those words). The illiac artery connects to the heart, so CARDIAC makes sense (also of course, it was made of cardboard)
"CARDIAC arrest (ba-dum tsss)"