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Fifty-Year-Old Computer Being Restored

James Green directs us to "a Sunday Age (Melborne) article which describes the discovery of a 52 year old computer found in a dusty warehouse weighing in at 2,000 kilograms. Attempts are underway to get the CSIRAC up and running as a museum piece next year." They say it uses 30 kilowatts per hour; I think they mean 30 kilowatt-hours per hour.

22 of 116 comments (clear)

  1. And before it gets said by / · · Score: 4

    There's only one of these things, so no one can build a beowolf cluster out of it.

    I have to wonder whether this will have any impact on the MS antitrust suit, since perhaps MS can point to this thing and say: "Look, it's competition, and it's not running Windows!" Maybe this's why the Justice Department has become a bit more open to the idea of settling through arbitration!

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  2. How long 'til it hits the 'net? by h2odragon · · Score: 3

    52 years old... If they restore it to actual operational status I'll bet they don't run it for very long at a time. Spare tubes and such are gonna be a bear to find. Power shouldn't be a big deal, there's almost certainly some local power company that'd eat the bill to have a "Sponsored by" sign on it.

    I wanna know if they'd put it on the 'net, assuming of course they could find implementors for the necessary software. I'd be willing to do a little work on that, just to see it done. Show up the guy with the TRS80 you can telnet to.

    Somebody beat me to the inevitable Beowulf comment.

    1. Re:How long 'til it hits the 'net? by ncc74656 · · Score: 2
      52 years old... If they restore it to actual operational status I'll bet they don't run it for very long at a time. Spare tubes and such are gonna be a bear to find.

      Tubes aren't as hard to come by as you might think. Lots of companies are still selling 'em. The biggest of 'em is Antique Electronic Supply in Arizona; a couple of others I can think of off the top of my head are CWest Tubes in Utah and Fair Radio Sales in Ohio. The audiophooles have driven the prices of some types (especially power triodes) through the roof, but many types still sell for just a few dollars each, including (IIRC) the 12A_7 types that boatanchor computers more than likely would've used by the gross. (If they're interested in economizing, they could retrofit the machine to use some of the goofball tube types developed for TV use, which are dirt-cheap...but since they're working with a one-of-a-kind machine, they probably don't want to hack it up too badly.)

      In fact, I've heard from some people that it's actually harder to fix old transistor radios than it is to fix similar equipment built with tubes, since early transistors have become scarcer than hens' teeth. Early ICs can be equally hard to come by (some talk came up in comp.sys.apple2 a while back about the feasibility of reproducing the Apple I from schematics, and someone noted that some of the chips used in that machine's design are no longer available.

      With all that said, the machine would more than likely be on static display most of the time. They might fire it up for special occasions or just to verify that it still works, but I doubt they'll have it participating in GIMPS 24/7. :-)

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    2. Re:How long 'til it hits the 'net? by h2odragon · · Score: 2

      Allright, ye've shown me up as the lazy reptile I am. TCP/IP is out, I grant. Thanks for the link. Note also that it has 2K words of disk. We can bounce back a light static page to an HTTP request or reasonable fake, and put it on the web if not the 'net. 1k op/sec will not survive the slashdot effect, unless we can get Mel on it.

      20 bit word size? That'll make things a little tougher unless it's good at bit banging. I have faith in the perverse genius of the folks who do things like text mode quake ("it's for the blind, Pops, really...") to do anything they want to see done.

      Let's not drag an ugly fact across this discussion by mentioning I/O. I was raised on Intel; "We don't need no steenking I/O..." Besides, a working fake serial port can't be that hard, and having the hardware hacked to do new stuff was obviously a part of this machine's operational life, so it's not like we're betraying it's memory by taking a soldering iron to it.

      (...been up waaaay too long now...)

  3. Re:kilowatt-hours/hour? by kipling · · Score: 2

    no, kilowatt is a measure of power, which is energy per time. so kilowatts per hour is energy per time^2

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  4. 52 years old? by LocalEmperor · · Score: 5

    Well if the museum doesn't want it, we can always give it to our public schools. They are in need of an upgrade.

    LocalEmperor

  5. The truth. by Matt2000 · · Score: 5

    There's a truth about the first computers that people rarely discuss anymore, and its about time somebody set the record straight.

    We all know that most of the first computers didn't work at all, they were little more than great empty cabinets with flashing lights. The real truth on how they computed isn't rooted in the development of the vacuum tube or the transistor, it was due to the hundreds of midgets who lived inside the machine and worked day and night on mathematics problems.

    Those first computers had to be built to confuse the ruskies, we all agree on that, but at what cost? What was the human toll in pushing those little guys faster and faster, first 1000 times faster than regular humans, then millions of times. Those first years were lessons in heat dissipation of a different sort, let me tell you 720 midgets in a box need a special kind of cooling.

    Let's not let history slip from our memories and cause us to forget the real, tiny heroes of the information age.

    Hotnutz.com

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  6. Break out the Alpha coolers by Oscarfish · · Score: 2

    Let's buy 1000 P3125 Alpha Coolers and overclock this thing to Kingdom Come!

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  7. First Synth by MrCreosote · · Score: 3

    Not only was CSIRAC the 4th stored program computer in the world, and oldest surviving, it was also probably the first computer to generate music

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  8. first-generation electronic computer by Mazzella! · · Score: 2

    The article goes into little detail about the archetecture, other than saying it has 1024 bytes, or 1k of RAM. How much was it a tube computer, electronic switching computer or what else?

    If it was a tube computer, could you imagine the heat of 40 meters square of tubes and switches would generate! I though my area was warm with 2 21" and 2 17" tubes a-blazing!

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  9. How many nerds does it take... by raygundan · · Score: 2

    The comment above this one finally hits the nail on the head, with one small caveat. Saying either kWh/h or kW/h is silly. But kW/h is wrong, and kWh/h is ACTUALLY CORRECT, as silly as it may seem. Look at your electric bill. Mine gives my energy usage in kWh/day, which is the same d@mn thing as kWh/h, with a time conversion. It is also correct to say that the machine uses 30kW. This is akin to saying that it uses an average power (or, less likely, a perfectly constant power) of 30kW.

  10. Somewhat off-topic... by Ford+Prefect · · Score: 2

    Another old computer that was rebuilt...

    http://www.computer50.org/

    Interesting because it was the world's first stored program machine, was programmed by Alan Turing, and was built just down the road from where I am at the moment.

    And best of all, there are emulators and programs you can download for it... :)

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  11. Details by MrCreosote · · Score: 2

    Details of CSIRAC can be found here

    Also, documentation is available (not online) here

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    MrCreosote Meow!Thump!Meow!Thump!Meow!Thump! "You're right! There isn't enough room to swing a cat in here!"
  12. Vacuum tubes by mouseman · · Score: 2
    Spare tubes and such are gonna be a bear to find.
    I went to a symposium a year or so ago on the Sage system -- the first world's first air defense computer system. As a backdrop to the talks, there was this huge wall of vacuum tubes that was actually a tiny piece of the computer. Someone pointed out that all those tubes were actually quite valuable -- audiophiles are willing to pay a small fortune for them. One of the speakers at the symposium, Paul Edwards, wrote The Closed World, which discusses the role of the Cold War in the development of computer technology.
  13. hmm? by Byzantine · · Score: 2

    My only questions is how big a "standard sized room" is.

  14. CSIRAC by goon · · Score: 2
    • a Sunday Age (Melborne) article which describes the discovery of a 52 year old computer found in a dusty warehouse weighing in at 2,000 kilograms.
    This should read 'Melbourne'. I would have put it up sooner, but I typed in http://segfault.org by mistake :) Here's a better link fairfax IT section.

    • Because the tunes were first played between 1951 and 1953, Doornbusch is confident it was probably the first computer music anywhere.
    An interesting fact that would be nice to confirm is that the played the worlds first computer generated music. I've heard the tape on the ABC's Science show (http://www.abc.net.au/rn/science/ss/ss.htm) last year.
    • In 1948 he, with Maston Beard, commenced the design of a stored program electronic computer. This machine, the CSIR Mark I, was developed largely independently of work then underway in Britain and the US.
    There's also a link to the machines co-creator, Trevor Pearcey
    • http://www.pearcey.org.au/

    • http://www.pearcey.org.au/obituary.html
    It will be good to go and have a peek and listen.
    --
    peterrenshaw ~ Another Scrappy Startup
  15. Re:Units by osguzzler · · Score: 2

    See how everyone jumps to conclusions? The article says kilowatts per hour, i.e., kilojoules per hour squared, so it's obvious they're talking about an acceleration: every hour the machine stays connected, its power demand goes up by 30 kilowatts. This is because in the early days of computing, they knew how to store stuff in memory but didn't know how to remove it, so the memory kept piling up and consuming more and more kilowatts - sorry, kilojoules. Also, valves/lamps/tubes take a long time to warm up,so this also has some incidence on the power consumption. Also, the little prongs on the punching machine get more and more blunt as you go on, so they need more energy to pierce the paper or cardboard (they don't specify whether it uses tape or cards). There are a whole lot of similar factors to take into account - so stop degrading reporters who obviously know much more about their subject than all of you smart-arsed nerds! ( :-) )

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  16. Some information by Goonie · · Score: 5
    I'm a postgrad student in the CS department Melbourne University, where several people who were involved with CSIRAC still work. There are a couple of misconceptions here on Slashdot(which I don't recall being in the article, BTW).
    1. IMHO, there is no possibility of the machine EVER being fired up again, unfortunately. While it's a nice dream, it's likely that trying to restart the thing would do nothing but cause a large fire. These are 50-year-old vacuum tubes, people!
    2. I believe that n emulator has been written for it, and many of the original programs (on paper tape) have been saved and run on the emulator.
    3. The machine WILL be displayed publically in Melbourne, probably at the new Museum of Victoria that's just about completed. This will complement Sydney's Powerhouse Museum, which has a piece of Babbage's Difference Engine.

    It's a fascinating device to look at - at first glance, it looks like a piece of old radar junk you'd find in a disposals store, until you talk to some of the people who understand the thing. It all starts to make sense then - the mercury tube memory is particularly clever. Even more fascinating is some of the software written for it, such as the "autocoder" program which looks suspiciously like a proto-compiler, written at or before the same time as FORTRAN and COBOL.

    Check out this CSIRAC site.

    --

    Any sufficiently advanced technology is indistinguishable from a rigged demo
    --Andy Finkel (J. Klass?)
  17. Specs and PIcutre of the machine. by Thomas+Charron · · Score: 2

    Specs for the CSIRAC (Hyperlink is to picture of the machine) can be found Here. Includes specs for the memory, drum storage devices, etc..

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  18. Re:Russia is a good source of tubes. by Tau+Zero · · Score: 2

    "Valve" is another term for vacuum tube.
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  19. Read your electric bill by DragonHawk · · Score: 2

    no, kilowatt is a measure of power, which is energy per time. so kilowatts per hour is energy per time^2

    It has been long enough since I took a science course that I can't remeber the science aspect of all these formula (formuli? formulas?). But I do have to worry about my electric bill, so I know how this works.

    Watts is how much juice it takes to run something. (I say "juice" because I can't remember if the technical term is power or energy or what.) For example, a 100 watt lightbulb means it draws 100 watts whenever it is turned on.

    The watt-hour is a measure of power usage. If you run a 100 watt lightbulb for an hour, you just used 100 watt-hours. If you run a 50-watt lightbulb for two hours, you still use 100 watt-hours.

    This is how the power company bills you. If the only thing in your house is a space heater that draws 1000 watts, running it all the time will use 24000 watt-hours, or 2.4 kilowatt-hours, per day. If you run two of them, you will use 4.8 kw*h per day. The "hours" in "kilowatt-hours" is a theoretical hour, not a real-time hour.

    Thus, I would assume CSIRAC draws 30 kilowatts of power whenever it is turned on. I suppose you could say it uses 30 kW an hour -- if you leave it on for an hour. :) Leave it on for two hours, and it will have used 60 kW*h. Use it only for half an hour, and you only use 15 kW*h. Get the idea?

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  20. Restored != Made operational by DragonHawk · · Score: 2

    IMHO, there is no possibility of the machine EVER being fired up again, unfortunately. While it's a nice dream, it's likely that trying to restart the thing would do nothing but cause a large fire. These are 50-year-old vacuum tubes, people!

    It is worth pointing out that "restored" does not mean "made operational". Restoration could simply mean dusting it off and replacing gaping holes in the front panels so that it looks like it did when it was operational.

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    dragonhawk@iname.microsoft.com
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