You’ve Come a Long Way, ENIAC
Now I am reading The Universal History of Computing, an extremely complete and detailed account of every single computing advance in history. It is so complete that it starts with numbering systems, and the invention(!) of the number zero. Where would computers be without the zero?
ENIAC was short for Electronic Numerical Integrator and Computer, and it was designed in 1943 and completed in 1945. That was just 65 years ago. It was the first real computer because it was completely electronic, general-purpose, and analytical.
This thing was huge, as you can probably imagine. Much bigger than the computer (or mobile device!) that you are reading this on. In fact, it took up a space 18 ft. by 36 ft. So you needed a huge room just to put it in. Besides that, it weighed 27 tons!














