When Was the First Large Scale Computer Built?

That’s what you’re searching for. That would be the ENIAC.

The original development contract was signed on June 5, 1943. It was unveiled on February 14th, 1946. It was officially accepted by the U.S.  Army Ordnance Corps in July of 1945. Except for a “refurbishment” and “memory upgrade” in November of 1946, the ENIAC was in continuous operation until 11:45 PM, October 2nd, 1955.

The EDVAC and the ORDVAC were the names of the computers that replaced the ENIAC.

From Wikipedia:

ENIAC, short for Electronic Numerical Integrator And Computer, was the first general-purpose electronic computer. It was the first Turing-complete, digital computer capable of being reprogrammed to solve a full range of computing problems. ENIAC was designed and built to calculate artillery firing tables for the U.S. Army’s Ballistic Research Laboratory.

The Original Computer. The ENIAC.

The Original Computer. The ENIAC.

And click here for the full ENIAC story.

These days, you get way more computing power in the lowliest desktop or laptop running Microsoft Windows. Even an old machine running Windows 95 would way out perform the hugely expensive (and hugely huge) ENIAC, EDVAC and ORDVAC.

And don’t get me started on how above and beyond Windows NT or Windows 2000 are.

3 Responses to “When Was the First Large Scale Computer Built?”


  1. 1 Amel January 29, 2009 at 4:56 am

    Blog walking 🙂
    Nice blog eh

  2. 2 Memetrics January 29, 2009 at 1:16 pm

    Welcome, Luke Blogwalker. I wish you all success in your fight against the Empire. Long live the Rebel Alliance!

  3. 3 Tachyon October 24, 2009 at 8:25 pm

    Actually, that would be Colossus built by the British at Bletchley Park during WWII.


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