Charles Babbage
Like a normal desktop computer. Very big!
Sorry, I made a mistake and I hope I did not case you trouble. There is a big line when we define a computer, it is not like we look at out computers today. Something making a calculation can be a computer. The first computer, which is on display, and called a computer, was invented in 1847 by Charles Babbage. This question has been answered before on wiki answers, and the page is very long depending on what class is considered a computer, so as it seems it would have to be asked by what class of computer to get the right answer.
Microsoft basically invented the computer as we know it now, before they where just very big calculates
very very very small but they are clever or are they?
Kirkpatrick MacMillian invented the very first bicycle it had a big wheel at the front and a tiny wheel at the back.
More like a mechanical calculator than a computer they have changed so much over the years
50cm
big fat
Electricity was not invented, it has existed since the first instant of the Big Bang (if not before).
Big enought to not be a laptop. As in, you wont want it on your lap.
1969
History of computer is divided into 5 generation. The first generation of computer started form 1941 till 1956. In this generation vacuum tubes are used in computers and computers are big enough that one computer could be such big as a whole room.