Related item: The computer behind the Eagle (as in "The Eagle has landed).
from DavidReneke:The computer that took men to the moon.
the Apollo Guidance Computer, which weighed 70 pounds, had only 36K of RAM and 2K of ROM. But it was able to guide 27 men to the moon’s orbit and bring them back safely. It consisted of two parts: a small keyboard for the astronauts inside the command and lunar modules, and a separate, slightly larger logic unit.