World first computer ENIAC

  ENIAC The  ENIAC  was invented by J.  Presper  Eckert and John Mauchly at the University of Pennsylvania and began construction in 1943 an...

 ENIAC

The ENIAC was invented by J. Presper Eckert and John Mauchly at the University of Pennsylvania and began construction in 1943 and was not completed until 1946. It occupied about 1,800 square feet and used about 18,000 vacuum tubes, weighing almost 50 tons