50 years ago today, Alan Shepard, America's first astronaut, and the then-newly-formed National Aeronautics and Space Administration (or NASA to you and me) achieved an important milestone for the U.S. space program: America's first manned spaceflight.
The effort is often talked about in terms of the people involved, or the spacecraft that made it possible. Alan Shepard, for instance, is rightfully regarded as a national hero, and the humble Redstone rocket that carried him into sub-orbit is an iconic reminder of that first flight.
There's a crucial component that also played a massive role, however, a young technology at the time that rarely gets its due considering how important it was: the computer.