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UK's Oldest Computer To Be "Rebooted"

Smivs writes with this interesting piece of computer history, excerpted from the BBC: "Britain's oldest original computer, the Harwell, is being sent to the National Museum of Computing at Bletchley where it is to be restored to working order. The computer, which was designed in 1949, was built and used by staff at the Atomic Energy Research Establishment in Harwell, Oxfordshire. It first ran in 1951 and was designed to perform mathematical calculations. It lasted until 1973. When first built the 2.4m x 5m computer was state-of-the-art, although it was superseded by transistor-based systems. The restoration project is expected to take a year. Although not the first computer built in the UK, the Harwell had one of the longest service lives. Built by a team of three people, the device was capable of doing the work of six to ten people and ran for seven years until the establishment obtained their first commercial computer. 'We didn't think we were doing anything pioneering at the time,' said Dick Barnes, who helped build the original Harwell computer."

37 of 153 comments (clear)

  1. obligatory Simpsons quote by Drakkenmensch · · Score: 5, Funny

    "In the future, I predict computers will be twice as powerful, ten times larger and be so expensive only the five richest monarchs of Europe will be able to afford them." - Professor Frink

  2. ...finally! by Stenchwarrior · · Score: 4, Funny

    Once the computer is in working order it will be shipped to San Fransisco where the new Systems Admin will finally be able to sniff out that backdoor appliance.

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  3. hindsight by Lord+Ender · · Score: 5, Insightful

    We didn't think we were doing anything pioneering at the time

    This is why the article we had yesterday, which argued that technological growth is slowing down, was a total hogwash. Technological growth is speeding up! What is constant is our inability to recognize great technological advancement except in hindsight.

    --
    A slashdotter who didn't build his own computer is like a Jedi who didn't build his own lightsaber.
    1. Re:hindsight by thisnamestoolong · · Score: 3, Interesting

      Saying that technological growth is slowing down or speeding up is total hogwash, in my opinion. The only way to measure technological growth is by placing arbitrary mile markers in the road. On one hand you have the folks that choose to measure technological growth by new inventions and can say that we are just polishing things that have already been invented. On the other hand, you have the folks that measure technological growth by its ubiquity, and show that more and more people are using more and more tech each year. Who is right, and who is wrong? I would submit that it is irrelevant and simply humans trying to place arbitrary classification on a complex system. We ought to just make sure that we are always doing our best to further the fields of science and technology, and not worry about whether our growth is faster or slower than in the past.

      --
      To the haters: You can't win. If you mod me down, I shall become more powerful than you could possibly imagine
    2. Re:hindsight by hairyfeet · · Score: 4, Interesting

      I'd say the biggest change since those days boils down to a single word....price. My first computer was a VIC20 which as you can see by the specs had a whopping 5k of RAM, and a whole 1MHz CPU. With the addons I paid close to $600 for it, and just recently I built a new machine for myself with dual 2500! MHZ CPUs, 8Gb of RAM (which is bigger than my first 4 HDDs put together) and nearly 1Tb of storage, all for a little less than I payed for the VIC. Even the smallest convenience store has computerized checkouts, and checking out of Walgreen's the other day I noticed they had MP3 players with larger storage than my first 2 HDDs for a whopping $15.

      When you add to this the lifespan of computers nowadays (I am typing this on a circa 2000 1.1GHz Celery Win2K PC that I use as a netbox) it has made truly incredible amounts of computing available to the masses. The rise of "cheap computing" has done more to shake things up than any particular CPU or other hardware released IMHO. Just the sheer amount of power folks get today is just insane, and the ability for anyone, no matter how much or little they make, still just blows my mind. Anyone today can have a PC powerful enough for desktop publishing, running mailing lists, pretty much any job the average Joe would ever care to do for little to no money (I often refurb older machines to give away and have a couple of 500Mhz boxes running mailing lists for local churches) has really changed things.

      In my youth computers were strictly for the hackers and those with the serious cash required to buy something with a GUI. Machines were expensive, proprietary as hell, hard to use, and often had to be programmed from scratch. Now even my nearly 70 Luddite father uses a laptop so he can "read the paper" using the wireless network I set up for him while he watches his NCIS from the couch. The amount of freeware and FOSS out there is just astounding, and there are literally thousands upon thousands of choices, from software to hardware, hell thanks to Linux and the BSDs even OSes. Maybe I'm just getting old and easily impressed in my advancing years, but if you would have told me that I'd have my oldest designing new levels for three dimensional video games on my hand me downs back then I'd have told you that you were insane, not just because of the kid. The amount of processing power we take for granted today or even pass down to our relatives when we get new toys to play with is just unreal, and that I think has changed the way we live more than anything else IMHO.

      --
      ACs don't waste your time replying, your posts are never seen by me.
    3. Re:hindsight by geezer+nerd · · Score: 2, Informative
      In my early days of computing, computers were very large machines which resided in purpose-built computer rooms with large glass walls allowing passersby to observe the whirling tapes and the blinking lights so as to properly "ooh" and "aah" over the marvels of cutting-edge technology. Thank goodness those days are long-gone.

      In the latter half of the '60s I had the good fortune to be able to use the most super-duper supercomputer of the time, the CDC 6600. For those who may not remember, the 6600 was one of the creations of the genius mind of Seymour Cray while he worked for Control Data Corp. I was going to write a tome about the machine, but I find the Wikipedia description (http://en.wikipedia.org/wiki/CDC_6600) is actually very good.

      Suffice it to say that with a max of 1.3million characters main memory, and a 10MHz clock frequency, it was the biggest, fastest computer on the block in its day. The computations I was doing for my thesis at the time went from 8 hours per point (CDC 1604) to 1 hour per point. That was a really significant boost.

      However, even back in the '90s, desktop PC hardware had improved (in capability and price) such that even a typical PC system would have a lot more power and capability than the 6600. Viva la difference!

  4. Vaccum Tubes? by A.+B3ttik · · Score: 4, Insightful

    The article is extremely light on details. Where are they going to get vaccum tubes or other antiquated apparatuses from? How much will they cost?

    1. Re:Vaccum Tubes? by MrKaos · · Score: 5, Informative

      Where are they going to get vaccum tubes or other antiquated apparatuses from? How much will they cost?

      I think many vacuum tubes are being manufactured in Russia right now, I know this from buying guitar amplifier tubes so I suspect that is where they will be sourced.

      --
      My ism, it's full of beliefs.
    2. Re:Vaccum Tubes? by value_added · · Score: 4, Funny

      I think many vacuum tubes are being manufactured in Russia right now, I know this from buying guitar amplifier tubes so I suspect that is where they will be sourced.

      That does raise the question of whether a computer built with vacuum tubes gives mp3 files a warmer sound.

      Or maybe not. ;-)

    3. Re:Vaccum Tubes? by MrKaos · · Score: 2

      That does raise the question of whether a computer built with vacuum tubes gives mp3 files a warmer sound.

      Sure, once the tubes are at operating temperature...

      --
      My ism, it's full of beliefs.
    4. Re:Vaccum Tubes? by Anonymous Coward · · Score: 2, Informative

      There are still plently of places in the UK that make these, admittedly most of the ones i know are hand-made for guitar amplifiers but they most certainly are made in the UK.

    5. Re:Vaccum Tubes? by rubycodez · · Score: 5, Interesting

      the thing uses dekatrons (ten cathode tube where pulse on guide electrode next to a cathode makes conduction jump to next cathode), which though not produced anymore are widely available. A computer made from them is much like a mechanical cash register with counting wheels. they are used by many hobbyists for clocks and other counting applications. no problem getting them

  5. Shutting down older hardware... bad idea. by marciot · · Score: 5, Informative

    I've found that for older hardware that is running fine 24x7, the worst thing is to shut it down. It invariably fails to start up again.

  6. Obligatory Bill Gates misquotation by Anonymous Coward · · Score: 2, Funny

    64 vacuum tubes ought to be enough for anyone.

  7. A joke my Dad told... by MickyTheIdiot · · Score: 5, Funny

    Okay.. I know that the premise of this joke is totally wrpng and UK scientists were computing pioneers, but it reminds me my favorite joke my father ever told me:

    Q: Why didn't the British never make a computer?
    A: They couldn't figure out a way to make it leak oil.

    (I think the joke is incorrect... probably on both counts).

    1. Re:A joke my Dad told... by value_added · · Score: 4, Insightful

      A: They couldn't figure out a way to make it leak oil.

      And that's a bad thing?

      My first car was a 2-seater Triumph convertible. It suffered from electrical system problems, leaking hydraulics, and when it rained, the top would leak (even if you managed to snap all the buttons downs correctly). But was it fun! Wind through my hair, wet shoulders, the smell of hydraulic fluid dripping on my left shoe, being pulled over and cited for "overcrowding" when I had more than 3 passengers in the car ...

      The cars I've owned since have all been what you'd call dependable if not "top of the line", but I can't remember a single interesting about them.

    2. Re:A joke my Dad told... by pjt33 · · Score: 2, Funny

      Are there really people here who don't get the joke?

      Yes. But don't worry: I'm getting off your lawn.

    3. Re:A joke my Dad told... by svtdragon · · Score: 4, Interesting

      My mother owned a Jaguar X-type from 2002 or so. I once read a review of it (this one, I think) and they made exactly this point:

      There was a time not long ago when Jaguars were stunningly beautiful, fantastic driving cars that were known to be fragile and unreliable. Jaguars were sexy but leaked oil. Jaguars were luxurious and emotional, but their windows often failed to go up or down. Jaguars were invigorating to drive but could leave you stranded on a cold morning.

      This Jaguar, the X-Type, is the opposite of those great Jags of the past. This car trades those wonderful qualities that made Jaguars cars to lust after and has replaced them with the bland reliability that makes Toyotas cars to lust after....

      Maybe we'd like it better if it leaked.

  8. UK's oldest computer? by solevita · · Score: 5, Interesting

    I thought that Colossus would take this title? Not only is it older and British, but it's also (I'm told) the World's oldest electronic computer.

    1. Re:UK's oldest computer? by TobascoKid · · Score: 5, Informative

      The Harwell is still in one piece, the Colossus no longer exists (the Colossus at Bletchly is a replica). Also, the Harwell is a stored program computer (like all modern computers), Colossus isn't.

      --
      At some point, somewhere, the entire internet will be found to be illegal.
  9. Original Punch Cards too? by realsilly · · Score: 2, Interesting

    For many of the younger generations of developers who don't know anything about these machines, it would be quite something to show them how the original developers used to work. It will also show how far we have advanced.

    --
    Life takes interesting turns, but the most interest is when you're off the beaten path.
  10. primitive pr0n by syntap · · Score: 2, Interesting

    We didn't think we were doing anything pioneering at the time

    Yeah, that's what the ASCII art inventors and the creators of GIF at CompuServ said.

  11. Modern Times by casals · · Score: 4, Funny

    "[...] the device was capable of doing the work of six to ten people [...]"

    Interesting to see how it changes over time. Today, considering the majority of jobs, you either cut off social networking access or you'll need six to ten people to do the work of two or three.

    --
    AT &F1DT0,T0800665544 - Real men, real help desk support.
  12. Re:What? by ciderVisor · · Score: 4, Insightful

    Oldest surviving computer, perhaps ?

    --
    Squirrel!
  13. Re:What? by Spad · · Score: 3, Informative

    It seems to be predated in the UK by at least ENIAC, EDSAC and Baby, though not by a long time.

    I can't find anything written about it that implies anything particularly special about it that would allow it to be "first" in a given area.

  14. computer, versus stored program computer, versus.. by Ancient_Hacker · · Score: 4, Interesting

    There's the problem of deciding what's a real computer-- do you include things that can crunch numbers, but have a hard-wired program, or have a program, but it's on a loop of paper tape, or have a program, but it's wired onto a plugboard. The Harwell machine is programmable, but the program is on a loop of paper tape, making anything other than one simple loop very problematical.

    Also its data storage is in a few cold-cathode Dekatrons, which are basically overachieving neon lights. They limit the counting-up speed to about 20,000 increments per second, just barely in the electronic realm, and much slower than anything using real vacuum tubes. And it uses a lot of mechanical relays, further limiting its speed and making it a very marginal computer in any modern sense of the word.

  15. Re:One word by MrKaos · · Score: 5, Funny
    Imagine a beowulf custer, it's easy if you try Idle time available, while calculating pi Imagine all the systems, we'd cluster today Imagine there's no OS wars, It isn't hard to do Nothing to kill or ps for, And no zealotry too Imagine all the systems,computing their piece Whooo Hooo You may say that I'm a schema, But I'm a zero and a one I hope someday you'll join us, And the cluster will be as one Imagine divide by zero, I wonder if you can No need for greedy matching, A motherboard that can Imagine all the processes, Sharing memory You may say that I'm a schema, But I'm a zero and a one I hope someday you'll join us, And the cluster will be as one

    With apologies to john Lennon

    --
    My ism, it's full of beliefs.
  16. You are entirely correct by Kupfernigk · · Score: 5, Informative
    The original US tube-based computer (I forget the acronym) had about 5000 tubes, each of which had a MTTF of around 2-3000 hours. Many people thought that it would break down too often to be of any use. But the designers had realised that what kills tubes is turnon (when the filament carries more current because it is low resistance) causing filament damage and thermal shock damage to the envelope. If the tubes were warmed up slowly and then left on all the time, there would be an infant mortality phase but then the machine would get more reliable with time as the tubes got into the depths of the bathtub life curve.

    Pedant note: although "all the time" or "always on" have more letters than "24x7", they are quicker to say and more meaningful. Why do we have this horrible cypher?

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
    1. Re:You are entirely correct by value_added · · Score: 2, Informative

      Pedant note: although "all the time" or "always on" have more letters than "24x7", they are quicker to say and more meaningful. Why do we have this horrible cypher?

      Pedant note: The term "cypher" is not a meaningful synonym for argot, cliche, neologism, colloquialism, expression, jargon, localism, newspeak, parlance, phrase, or vernacular (among others).

      That's not to say slipping in other people's mud isn't forgivable. ;-)

  17. Turing by FlyingBishop · · Score: 2, Insightful

    Looking back, hardly any of us were computer literate and it's astonishing that we managed stored computing at all.

    Yeah, it's funny how that happens when you persecute your best people.

    I guess this was '49. But still. These guys are getting media attention while Turing rots in his grave.

    1. Re:Turing by ZosX · · Score: 2, Funny

      He's in a grave. Is he not supposed to rot?

  18. Re:Obligatory tired meme by JCCyC · · Score: 2, Interesting

    I'm more interested in having it emulated in MESS.

  19. Well, yes by Kupfernigk · · Score: 4, Insightful
    Most modern computers (by quantity) are basically communications devices. Although we have converted the processes of communication to mathematical operations, this is to fit in with the way a computer works. We manage to speak to one another without the use of mathematics. We do not see the function of a mobile phone or a netbook as being "to perform mathematical calculations".

    Early data processing machines (like Hollerith card analysers) were designed to perform select and sort operations which they did using logical functions, but they did not do calculations. You wanted to know who in a brigade had a particular skill, you fed in the punched cards for the brigade, and the output stack delivered the ones whose holes coincided with the setup. Colossus was intended to do code breaking by high speed (for the time) data processing, but it did not do general purpose calculation. So yes, this is a meaningful distinction.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
  20. Re:One word by pjt33 · · Score: 2, Informative

    Who modded this offtopic? Stonehenge is seriously claimed by some to be the UK's oldest computer.

  21. On a related note... by billybob_jcv · · Score: 2, Funny

    Micro$oft recently released Harwell OS 7, which uses all of the available registers to create a waving M$ flag using the Harwell's front panel lights. Unfortunately, it has since been determined that the new OS really requires two Harwell computers wired in a parallel configuration to perform adequately. The M$ product manager for the Harwell OS stated: "The hardware requirements on the side of the box clearly state that one Harwell computer is the MINIMUM requirement, not the optimum configuration."

  22. Re:What? by JasterBobaMereel · · Score: 3, Informative

    It was built in 1951 and used for teaching until 1973, and then donated to a museum, it is the earliest surviving British computer

    All the earlier ones (Colossus, Manchester M1 etc.. ) were destroyed, dismantled, or lost, just like their American counterparts (ENIAC etc ..)

    The earlier ones you can see in museums are all only parts, or reconstructions, this is a complete and when restored potentially working computer

    --
    Puteulanus fenestra mortis
  23. Manchester Small-Scale Experimental Machine, 1948 by davidwr · · Score: 2, Interesting

    The Manchester Small-Scale Experimental Machine, aka the "Baby" Manchester Mark I, ran its first program in 1948. A replica was built in 1998 to celebrate its 50th anniversary.

    It had 32 words of 32 bits each and used a Williams Tube for memory.

    Opcode list:

    000 JMP S Jump to the instruction at the specified memory address (absolute unconditional jump)

    100 JRP S Jump to the instruction at the specified memory address plus the number in the accumulator (relative unconditional jump)

    010 LDN S Take the number from the specified memory address, negate it, and load it into the accumulator

    110 STO S Store the number in the accumulator to the specified memory address

    001 or
    101[t 1] SUB S Subtract the number at the specified memory address from the value in accumulator, and store the result in the accumulator

    011 CMP Skip next instruction if the accumulator contains a negative value

    111 STP Stop

    --
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