A machine called the Electronic
Numerical Integrator and Computer
(ENIAC) was developed by John
Presper Eckert and John William
Mauchly between 1943 and 1945 and
was built at the Moore School of
Electrical Engineering of the University
of Pennsylvania. After the
pair left the university, they set up
their own company and produced
the Universal Automatic Computer
(UNIVAC), selling the first one to
the U.S. Census Bureau in 1951.
This computer could perform 1,905
operations per second, but it required
35.5 square meters of floor space and
consumed power at a daunting rate.