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Happy 50th Birthday, UNIVAC 1

Frums writes: "Today is the 50th birthday of the UNIVAC I (UNIversal Automatic Computer), the first commercial computer. It was quite a beast: 16,000 lbs, 5000 vacuum tubes measuring 9 inches by 2 inches, and an amazing 1000 instructions executed per second! The first UNIVAC was sold to the US Census bureau where it revolutionized data storage from them. No longer did they have to use punch cards, UNIVAC supported storage on metal tape! The US Census bureau still maintains a plaque commemorating the computer. It reads "Bureau of the Census dedicated the world's first electronic general purpose data processing computer, UNIVAC I, on June 14, 1951. Eckert-Mauchly Computer Corporation" Happy Birthday, UNIVAC I!" Wired has a brief story about it.

15 of 139 comments (clear)

  1. No, the LEO was "the first commercial computer" by evilandi · · Score: 3

    #include pedantism;
    #include friendly_uk_us_rivalry;

    Depends how you define "commercial". Sure, the Univac 1 was the first computer built by a company and sold, but the actual computer did not perform commercial transactions- the owners, the US Census Bureau, were a government organisation, not a business.

    The computer that performed the world's first regular routine office job was the LEO Lyons Electric Office in the UK. As well as the Lyons catering firm, LEOs were used by Ford.

    My dad worked on a LEO.

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  2. Made out of depleted uranium?!? by Just+Some+Guy · · Score: 4
    ...16,000 lbs, 5000 vacuum tubes measuring 9 inches by 2 inches...

    I originally parsed that as: "16,000 lbs, 5000 vacuum tubes, and 9"x2" in size.

    Holy crap! The world's heaviest palmtop!d

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    Dewey, what part of this looks like authorities should be involved?
  3. Glaring omission by Our+Man+In+Redmond · · Score: 3

    They forgot to apologize for the biggest time wasting unintended consequence of all -- Slashdot.
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    Someone you trust is one of us.
  4. created more than the first commercial computer by L-Train8 · · Score: 3

    Eckert and Mauchly not only created the first commercial computer, they created the technology industry business plan.

    They built the ENIAC (the first electronic computer, whith the possible exception of Turing's Colossus) on a contract with the Defense Department at the University of Pennsylvania. They then took the patents from that project and tried to parlay them into a successful company. They attracted some initial investors, but they tried to keep as much control of the company as they could. They got bogged down with side projects and delivered the UNIVAC late. Meanwhile, larger companies with more capital for R&D, and more business and marketing know-how, put Eckert-Mauchly Computer company out of business.

    Not much has changed in the technology industry in the last 50 years.

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    Don't forget that Friday is Hawaiian shirt day.
  5. Re:But where's an Emulator... by ebh · · Score: 3
    Oh, thanks a LOT! The thought of emulating this beast brought back 20-year-old memories of the Univac 1100, with its Fieldata character set, quarter-word mode, the 1701 keypunch (and its "chad collector tray"), and the ever popular

    ER AREAD$

    system call.

    You know that sinking feeling you get when you realize you've just done an "rm -rf" on the wrong directory? That's very similar to the feeling you get just after hearing the splat of your card deck dropping into a puddle.

  6. UNIVAC I experiences by Animats · · Score: 4
    Case Institute of Technology had a UNIVAC I running when I went to visit them before enrolling. But by the time I got into college, they'd upgraded to a Univac 1107. Al Misek, who had maintained the UNIVAC I, told me that in the years the machine had been at CASE, they'd never had a tube failure during operation. Every morning, the tubes were run on "high margin", with elevated voltages, which would burn out all tubes near failure. Those were then replaced, allowing a day of uninterrupted operation. The self-checking dual CPUs would catch any errors.

    This was a decimal machine. Early computing used decimal machines for business, and binary machines for scientific work. There's still a residue of this in the decimal instructions of the x86 and of IBM mainframes.

    As a kid, I came across a junked UNIVAC I, including console, at Alert Surplus Sales (920 W St. NW), in Washington, D.C. Got to poke around the insides a bit. The tape drive's reel motors were driven by standard McIntosh audio amplifiers. The console switches were all telephone lever switches. There's no display on the console other than lights.

    Working at the Census Bureau in the late 1960s, I met many people who'd used the UNIVAC I machines. They also still had lots of punched-card tabulating gear, but prior to the UNIVAC I, they'd had acres of IBM tabulators. All the IBM gear was on rental; IBM didn't sell their machines. So, once the UNIVAC I was up and running, one day the IBM sales rep was called in and told that Census was cancelling most of the tab gear. It was the biggest return in IBM history, and the event that made T.J. Watson get IBM into computers.

    Census still had two UNIVAC 1105 machines running; the biggest vacuum-tube machines ever sold commercially. They still had lots of UNIVAC I tape. The original UNISERVO I tape was 8 track (6 data, 1 parity, one clock), 50 BPI and steel. Not steel on plastic, the tape was a ribbon of steel. Plastic tape, and an upgrade to 200 BPI, came with the UNIVAC 1105 and the UNISERVO II. Bad spots had to be found manually, and a tape with a bad spot could be rewritten if you manually punched a hole in the tape on either side of the bad spot. I still have a reel of this stuff from my years at Case.

    The UNIVAC I was operated as a tape-in, tape-out machine. Other standalone systems, each the size of a mainframe computer, did card-to-tape, tape-to-card, and tape-to-printer operations. The keyboard on the console had no display other than the console lights. Typically, UNIVAC I machines spent most of the day sorting, spinning tapes back and forth merging subsorts together. This was inefficient by modern standards, but far, far better than sorting hundreds of millions of punched cards. The sorting job alone justified the machines for Census.

    The UNIVAC I was basically the first commercial computer good enough to routinely use for business data processing.

  7. First Digital Computer? by clary · · Score: 4
    For another view of the early days of the computer, see this link: John Vincent Atanasoff and the Birth of the Digital Computer.

    Disclaimer: Iowa State University is one of my alma maters, so I am naturally biased.

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    "Rub her feet." -- L.L.

  8. Re:...but not the first stored program computer by UncleFluffy · · Score: 5

    Well, to be accurate:

    "The Manchester Machine (aka Manchester Mk 1)" (1949) was the *second* stored program computer, and was a general purpose machine.

    "The Baby" (1947) (also from Manchester) was the *first* stored program computer, and was a general purpose machine.

    "Colossus" (1943) was built at Bletchley Park, and was neither a stored program computer nor a general purpose machine.

    "ENIAC" (1945) was built at the University of Pennsylvania and was (almost) a general purpose machine, but not a stored program computer.

    "Ferranti Mark 1" (February 1951) was the world's *first* commercial computer.

    "UNIVAC" (March 1951) was the world's *second* commercial computer.

    (I'm not familiar enough with Zuse's contributions to place them accurately, but will acknowledge that they exist)

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    What would Lemmy do?

  9. Re:an amazing 1000 instructions executed per secon by Psmylie · · Score: 3
    Back then you could tell a good computer by the number of flashy lights

    I miss those flashy lights... I've been thinking of installing a bunch of them on my box at home, as well as a little device that will make "bing!" and "wrwrwrwr" noises.
    Ah, nostalgia.

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    psmylie's dictionary: Godzillion (noun) Any number large enough to destroy Tokyo

  10. Re:Not the machine so much as the people by sawb · · Score: 3

    It was created by Dr. J. Presper Eckert and Dr. John W. Mauchly who worked for Remington Rand Inc. It was started in 1946 and was completely on released on this day, 50 years ago.
    Here is a link to more information: UNIVAC History

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    I am .CA
  11. UNIVAC I at Smithsonian by micromoog · · Score: 3
    If you're ever in Washington D.C., stop by the Smithsonian Museum of American History and check out the basement. They have the UNIVAC I, as well as portions of the ENIAC, and probably most of the other pieces of computing history you've ever used or heard of.

    It's really incredible. I spent several hours in awe, walking through there.

    They've even got the earliest of early: relatives to Babbage's difference engine, etc. I highly recommend it for anyone who has any geek in them at all.

    And, like most of Washington, it's free.

  12. Nice PR move by Unisys by hillct · · Score: 5

    It really ammounts to a nice PR move by Unisys. Vary slick. Remind the world that 50 years ago the company was an inovator, well What have you done for me lately?

    I was a little disappointed with their spokesman Mr. Esnouf:"My son, for example, plays this game called 'I'm Going In,'" Esnouf said. "He spends all Sunday morning shooting people on the computer. We've invented this whole virtual reality. It's great, isn't it?" Is that really the best light he could put computer gaming in? I'm all for computer games and I'd say 'spending sunday morning shooting people' is a bit harsh. But all in all, Unisys pulled off a vary nice PR move without having to produce announce, or unveil a new product. Good deal for them...

    --CTH


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  13. My Uncle... by stonewolf · · Score: 4
    One of my Uncles wrote code some of the code for the UNIVAC I that was used to predict the out come of the 1952 presidential election. He would tell the story every time he was around his techie kids and relations. Seems most of the folks on the project were hard core Democrats and they all believed deep down inside that the other guy (Stevenson?) was going to win.

    When they got the first numbers and ran the analysis the UNIVAC said that Eisenhower was going to win by a landslide. Well, the programmers didn't believe it so they started looking for the bugs in their code. They looked really hard and fixed a couple of bugs and they got new data and they reran the analysis and it said Eisenhower by a landslide. So they went looking for more bugs...

    Finally they had to report their results and they did with great embarrassment because nobody, including the press, believed the Eisenhower could possibly win.

    Eisenhower won in a landslide.

    My Uncle would always end the story with a moral about having to trust the results of experiments even when they disagreed with your personal belief. He's a great guy, I wish I knew him better.

    StoneWolf

  14. Not the machine so much as the people by Penfield+Zoat · · Score: 5

    We in the tech business sometimes have a habit of elevating technology to a sort of self-causing status. For example, we are now celebrating the birthday of UNIVAC, a non-living being which has done nothing of its own accord. I have to ask: where are the humans?

    Neither the wired article nor Slashdot so much as mention those who made this, and all subsequent computers a reality. Sure Linus Torveldes buys a taco and it's written up in every Linux rag, but try to give some credit to the people who gave him his opprertunity, and you come up empty! (Never mind that these guys were doing original, really original work, and Linus was just copying).

    I demand that Slashdot's editors actually bother to find out who created this machine and publish it. It think that as a computer user, you owe them that much of a memory. Not to mention it might put a stop to all this senseless gadget-worship.

  15. UNIVAC 1 users manual on line by Al+Kossow · · Score: 4

    In honor of UNIVAC 1's birthday, I've placed a scan of the users manual at http://www.spies.com/aek/pdf/univac/Univac1_OperMa n.pdf There is a nice picture of the front panel at the back. re: simulators I seriously doubt any UNIVAC 1 code survives to RUN on a simulator. It appears that there is very little second generation computer software left, much less first generation.