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Mechanical Computing

FTL writes "Tim Robinson has built a computer capable of solving polynomial equations -- using Meccano. His difference engine (mirror) uses a similar approach to Babbage's design. He's also created a differential analyzer (mirror) complete with a GUI. Both could be scaled up indefinitely to handle larger problems. 'Computing by steam' is possible."

149 comments

  1. Strange by Anonymous Coward · · Score: 4, Insightful

    Strange. I thought Mechanical Computing was in the past

    1. Re:Strange by cjellibebi · · Score: 4, Informative
      It is in the past for state of the art computers, but in the present for geeks playing around with computers that can easily be built. It's always fun to find an alternative method of building a computing device, and building it just for fun. I've seen logic-gates built out of all kinds of things.

      Digital computers are more suited being built electronically (small and fast), but in the early days of computers, many were analog. The transition to digital happened around the same time as the transition from mechanical to electronic. Nowardays, analog computing is virtually unheard of, but I think that sometime during the late 80's/early 90's, they had found an application for analog computing in Neural Networks. I can't remember what it was, but the revival in analog computing has failed to materialise, so it must not have been very important.

  2. Beautiful! by tyroneking · · Score: 4, Insightful

    No really - this is art...

    1. Re:Beautiful! by linzeal · · Score: 2, Interesting

      I have an abacus that hangs on my wall and it is always fun to see people use it, or at least try to. I learned how to use an abacus in 2nd or 3rd grade I think and the tactile sensation I think helped establish the immediciacy of mathematics in my own physical space for me.

  3. Computing by steam? by ranger714 · · Score: 4, Funny
    Sounds like what happened to a friend of mine recently who devised his own "Homebrew" watercooling rig for his Athlon64...

    The steaming vents on the case gave mute testimony to the utter destruction the water made as it transisioned rapidly from liquid form to gaseous form. Poor devil...

    Of course, I could also see something like that from the original "Wild, Wild West" tv show (and not the horrific movie of the same name), or maybe "Brisco County, Jr.".

    --

    "Snoochie-Boochies? Who talks like that? That is babytalk!"-Jay, Chasing Amy

    1. Re:Computing by steam? by Anonymous Coward · · Score: 0

      Personally, I'd rather see a computer pawered by a team of rabid gerbils.

  4. Freecache Mirror. by technix4beos · · Score: 0, Redundant
    --
    user@host$ diff /dev/urandom /dev/uspto
    1. Re:Freecache Mirror. by LiquidCoooled · · Score: 0, Redundant

      Freecache currently only works with files over 5mb - AND - it won't cache the pictures.

      It is designed to cache large high demand files (like movies or archives - not single html webpages.

      Having said that, if enough people use it, then maybe freecache people will change their policy.

      --
      liqbase :: faster than paper
    2. Re:Freecache Mirror. by Anonymous Coward · · Score: 0

      moron karmawhore.

    3. Re:Freecache Mirror. by technix4beos · · Score: 1

      Let's hope that they do change their policy then. I'm quite tired of seeing Slashdot go boom on poor unsuspecting servers, so I hurriedly put together what I posted without actually seeing the fine print, as it were. ;)

      It's the thought that counts, right?

      --
      user@host$ diff /dev/urandom /dev/uspto
  5. 1835 Called by Anonymous Coward · · Score: 4, Funny

    1835 called; they want their revolutionary technological ideas back.

    1. Re:1835 Called by AceJohnny · · Score: 2, Insightful

      Actually no, they didn't really care, then.

      --
      Misleading titles? Inflammatory blurbs? Keep in mind that Slashdot is a tabloid.
    2. Re:1835 Called by Anonymous Coward · · Score: 1, Funny

      By "called", of course, I meant "sent a primitive telegram".

  6. Computing Will Find a Way by Anonymous Coward · · Score: 0, Insightful

    FUCK PATENTS! FUCK DRM! Take my computer, and I'll build another from MECCANO!!! Take my Meccano, and I'll build a computer from root vegetables! Bwahahaha!

    More seriously, this illustrates just _why_ the I"P" neofascists are on a losing streak in the long run (but so was the xtian church, and the dark ages still lasted most of a millenium - so that doesn't fill me with glee. It mightn't be until the year 3000 that we leave the new I"P" dark age :-( )

  7. Tinkertoys by Tablizer · · Score: 5, Interesting

    Don't forget about the Tinkertoy computer

    1. Re:Tinkertoys by sploo22 · · Score: 1

      From the link:
      At some point the clicking mysteriously stops; a "core piece" within the framework spins and then with a satisfying "kathunk" indirectly kicks an "output duck," a bird-shaped construction. The output duck swings down from its perch so that its beak points at a number- which identifies the computer's next move in a game of tic~tac-toe.

      The "output duck" really made my day.

      --
      Karma: Segmentation fault (tried to dereference a null post)
    2. Re:Tinkertoys by Tablizer · · Score: 1

      The "output duck" really made my day.

      And they needed a lot of duck-tape to repair it I bet

    3. Re:Tinkertoys by modge · · Score: 1

      it had a quack in it *groans*

      --
      I am a sig
    4. Re:Tinkertoys by Anonymous Coward · · Score: 0

      Any relation to the Toilet Duck?

    5. Re:Tinkertoys by foobar01 · · Score: 1

      Here's a link to the first page of that TinkerToy Computer article A Tinkertoy Computer That Plays Tic-Tac-Toe, in case anyone is interested in reading the whole article.

  8. MIT's 1930s differential analyzer by Anonymous Coward · · Score: 5, Informative

    Mechanical computers were built and used over 60 years ago to solve differential equations and other analytical type problems. I know MIT and UCLA had pretty good mechanical computers in the WWII era. Check out MIT's famous mechanical differential analyzer for and idea of what was and is and awesome piece of hardware.

    1. Re:MIT's 1930s differential analyzer by Anonymous Coward · · Score: 0

      Yeah, but does it run Linux?
      And imagine a beo... nevermind.

    2. Re:MIT's 1930s differential analyzer by bev_tech_rob · · Score: 1

      Not to mention the mechanical computers on WWII battleships used to aim the big 17 inch guns. Actually were still in use (claimed they worked just as well as any modern electronic computer), in the 90's until the ships were decommissioned once again (or are they still in action?)

      --
      You're messin' with my Zen Thing, man.....
    3. Re:MIT's 1930s differential analyzer by Anonymous Coward · · Score: 0

      And of course they are inherently radiation hardened and resistant to EMI.

  9. Sweet by Revolution+9 · · Score: 4, Funny

    I always wanted a PC I could shovel coal into.

    1. Re:Sweet by Anonymous Coward · · Score: 0

      Now that woud be a bitch to cool.

    2. Re:Sweet by linzeal · · Score: 1

      I always wanted a bevy of victorian age asian female automatons shoveling coal into a huge furnace to power my death train that I have built to the exact specifications to use to steal all the silicon from silicon valley, muhahahahha.

    3. Re:Sweet by bcattwoo · · Score: 1

      Yeah and you thought P4's ran hot!

    4. Re:Sweet by addaon · · Score: 1

      Didn't quite get the athlon you wanted for christmas?

      --

      I've had this sig for three days.
  10. Rod Logic by 3Suns · · Score: 2, Interesting

    Reminds me of the nano-scale "rod logic" used for computation in Neal Stephenson's "The Diamond Age". Those were rods with bumps on them arranged in a 3d grid, and as the were moved back and forth the bumps somehow performed computation.

    --

    -3Suns

    ~~~~
    The Revolution will be Slashdotted
    1. Re:Rod Logic by MarcQuadra · · Score: 3, Interesting

      That's actually probably how nanoprocessors will operate, getting electricity to stay where you want it on the scale is a lot harder than using nanotubes with rods suspended in them. Of course, there will be actuators at the 'leads' that are electrical or light-actuated.

      --
      "Sometimes, I think Trent just needs a cup of hot chocolate and a blankie." -Tori Amos on Nine Inch Nails
    2. Re:Rod Logic by cr0sh · · Score: 1

      Konrad Zuse, anyone?

      --
      Reason is the Path to God - Anon
  11. Next project? by cjellibebi · · Score: 4, Interesting

    I recon this guy should try to build a machine that uses computational logic gates (NAND, NOR, etc). From that, he can build up things like binary adders and simple flip-flops. Then, add an instruction-decoder, and an arithmetic-logic unit - and viola - a Meccano CPU.

    1. Re:Next project? by temojen · · Score: 4, Insightful

      I think perhaps a (finite) turing machine would be much easier. It would be simpler due to not needing random access memory.

    2. Re:Next project? by Anonymous Coward · · Score: 0

      and viola

      I hope you meant voila, since viola is processed cheese. It was the best known Finnish product in soviet union and still is the best known Finnish product in Russia.

    3. Re:Next project? by cjellibebi · · Score: 1
      Oops. Slight fingers-keyboard-interaction-whoopsie there. Thankfully, I can live up to your hopes, as I did in fact mean 'voila'.

      BTW, 'viola' is also a musical instrument. It's bigger than a violin and smaller than a cello.

    4. Re:Next project? by mark-t · · Score: 3, Insightful
      Approximately one year ago, there was a lot of discussion on the pneumatics newsgroup for lugnet, and some interesting ideas on how to make assorted digital computing elements using LEGO were worked out. AND, OR, XOR, Adders, and even a mechanism for binary-based memory storage were designed.

      The costs of purchasing enough LEGO elements to actually make a simple and an even remotely usable computer, however, was well into the thousands of dollars.... kind of hard to justify for something that ultimately, is... well... rather useless.

    5. Re:Next project? by cjellibebi · · Score: 1
      Do you have a link?

      I think that although a usable Lego-computer would cost thousands, building a Lego CPU would be much cheaper. Not much use, but it would be a fun geek-project.

      I once knew someone who designed components for a lego-CPU. This included a 'Lego-transistor' to prevent the load that a single gear-wheel would have to drive from becoming too much.

    6. Re:Next project? by whereiswaldo · · Score: 1

      "viola" can also be used in a context where you are trying to be funny, for the personality impaired readers out there. Otherwise known as a "play on words" (an amusing use of a word with more than one meaning or that sounds like another word).

    7. Re:Next project? by Anonymous Coward · · Score: 0

      Oops. Slight fingers-keyboard-interaction-whoopsie there. Thankfully, I can live up to your hopes, as I did in fact mean 'voila'.

      BTW, 'viola' is also a musical instrument. It's bigger than a violin and smaller than a cello.


      yes, I thought it was a typo and since viola is also a name of the musical instrument (learned that when I googled for that valio viola page) even the spellchecker won't catch it.

    8. Re:Next project? by Anonymous Coward · · Score: 0

      Yes it could. Are you trying to say that people here try to be funny by playing with words? Never thought of that! Allthought I have noticed that some folks try be funny in a sarcastic way...
      Or I just don't quite get what you mean, english not being my native language and all.

    9. Re:Next project? by Anonymous Coward · · Score: 0

      Who said anything about random access memory? All we're talking about here is a basic CPU capable of performing simple arithmetic operations and perhaps following a hard-coded program. You certainly don't need RAM for that, just a few registers here and there.

    10. Re:Next project? by cr0sh · · Score: 1

      Contact this guy...

      --
      Reason is the Path to God - Anon
    11. Re:Next project? by Anonymous Coward · · Score: 0
      Otherwise known as a "play on words" (an amusing use of a word with more than one meaning or that sounds like another word).

      Except "voila" sounds nothing like "viola".

    12. Re:Next project? by Anonymous Coward · · Score: 0

      Except "voila" sounds nothing like "viola".

      In the context it is used, viola sounds enough like voila that it works. YMMV.

  12. My first computer by Registered+Coward+v2 · · Score: 4, Interesting

    was a mechanical rig that used 1 inch soda straws for 1's and blank holes fro zeros. You pulled a crank and it added two numbers. I wish I could remember its name - it was some sort of "science kit." from the 60's.

    --
    I'm a consultant - I convert gibberish into cash-flow.
    1. Re:My first computer by cjellibebi · · Score: 1
      >that used 1 inch soda straws for 1's and blank holes fro zeros

      How did you prevent the holes in the soda straws from being confused with the blank holes? And besides, if you hold a straw so it's end is facing your face, it looks more like a 0 than a 1.

    2. Re:My first computer by kfg · · Score: 3, Interesting

      I've been trying to remember the name of that puppy too. I had one and it was fascinating (if you're the sort of kid who also takes apart those old, plastic, push button, gear driven adding machines they used to sell in the grocery stores to see how they worked. Mechanical computers were actually nearly ubiquitous in the 60s).

      Anyone with 60s comic books should be able to find an ad for one in the back, right next to the 6 foot long fiberboard submarine.

      I never had one of those. I still blame my mommy.

      KFG

    3. Re:My first computer by kfg · · Score: 2, Interesting

      It was card programed, but not punchcard programed. You had a plastic card with "teeth" on one side. Sticking a bit of straw on one of the teeth was a one. A tooth without a straw on it (a "hole" between the straws) was a zero. You ended up with a gap toothed "comb." The straws were just a way to make cheap pegs.

      The answer came out in binary formed from stickers of little white and black squares stuck to tab ends of cards.

      KFG

    4. Re:My first computer by paul_21954 · · Score: 3, Informative

      my first digital computer was a digicomp 1. it got thrown away. there is a yahoo group dedicated to it and there is a pic and some info here: http://www.rdrop.com/~jimw/j-hist.shtml there used to be a simulation of it on a web page but i can't seem to find that (URL i had is dead).

    5. Re:My first computer by kfg · · Score: 1

      Bingo! That's the puppy. Thanks.

      Six bucks was a lot of money for a kid back then. Something like three months allowence for me, or a full day of mowing lawns/shoveling snow. I don't remember what happened to mine and I assume it got thrown away. I'll blame my mommy for that too, what the hell. ( I don't get to blame my mommy for not having any 60s comic books anymore though. I get to blame my best friend's mommy).

      I'd completely forgotten about Dr. Nim. I had one of those too.

      Memories. . . like the corners of my. . .

      Oh. Sorry. I'll stop now.

      KFG

    6. Re:My first computer by notsoclever · · Score: 1

      I have one of those! My grandpa gave it to me when he was cleaning out his basement a few years ago. I haven't put it together, though, since I'm afraid of losing/breaking the parts... I did scan the manual though. Hm.

      --
      There are 10 kinds of people: ones who understand ternary, ones who don't, and ones who think this joke is about binary
    7. Re:My first computer by paul_21954 · · Score: 1

      hold on to it. one just sold on ebay for ~150$.

    8. Re:My first computer by notsoclever · · Score: 1

      I wasn't planning on getting rid of it anytime soon.

      --
      There are 10 kinds of people: ones who understand ternary, ones who don't, and ones who think this joke is about binary
  13. Next thing to do.. by irokitt · · Score: 1

    Is get a C compiler working. I want to see it running Linux within the year!

    --
    If my answers frighten you, stop asking scary questions.
    1. Re:Next thing to do.. by GridPoint · · Score: 3, Interesting

      Linux probably would a bit too large to fit, but a port of Contiki might be worth waiting for, given their track record... Now if only someone would care to make a mechanical Ethernet NIC and we could build a fully mechanical webserver. You wouldn't be able to stand the noise a slashdotting of that would make!

    2. Re:Next thing to do.. by cjellibebi · · Score: 2, Interesting
      I think a more realistic next step would be to build a CPU out of logic-gates. See my other post for how this could be accomplished. After that, build masses and masses of flip-flops, and multiplexers so you can access (2^A)*D of them using A address-lines and D data-lines. Now you have storage, so you can run stored programs. Using an existing computer which has GCC ported to it, write a GCC back-end for your new CPU, and then compile Linux on it.

      Of course, you would have to modify this port of Linux to take into account how the Meccano compouter handles IO, etc. Add a means of networking, and you can turn it into a Linux server. Add user Input/Output, and you have a workstation.

    3. Re:Next thing to do.. by cjellibebi · · Score: 2, Interesting
      I'm not really sure if Contiki really is smaller than a Linux kernel can ever become. Contiki has been built mainly for 6502-based systems. What I've heard is that the reason there is no back-end for GCC that produces 6502 code is because the 6502 only has a 256-byte stack, and for reasons unknown to myself, GCC has a problem with this (I'm not sure if Linux also has this problem). Contiki has been built with the CC65 C compiler for 6502's compiler instead. So if the Meccano computer does not have this limitation, then Linux could run just as well as Contiki.

      Contiki/Linux just needs to be compiled on a real compiler with a back-end that produces code that the Meccano CPU can run. As for which OS to try out, try and compare the size of a Contiki kernel to thet of a Linux kernel, and go with the smallest (question: Is there a size comparison of the two kernels on a machine that is capable of running both OS's?). As all the flip-flops for memory/storage will have to be built by hand, it would make sense to try the smallest OS on the machine. I suspect that Contiki would be the smallest, but I am not sure if Contiki can run as a server OS, so it would be useless, unless you also made user Input/Output devices out of Meccano as well.

    4. Re:Next thing to do.. by bhtooefr · · Score: 2, Informative

      but I am not sure if Contiki can run as a server OS

      http://www.sics.se/~adam/contiki/apps/webserver. ht ml

      Contiki can even run a version of uVNC, which is Adam Dunkels' VNC server for 8-bit systems.

  14. More Images and Links. by technix4beos · · Score: 2, Informative
    More images and links, courtesy of FreeCache. Due to Slashdot's lameness filter, I'm filling in some characters here so the character per line average goes up.

    Enjoy a nice unsorted list of some images, courtesy of FreeCache. I wish more people would use this service in the future.

    And some more links that the author is working on, apparently:

    --
    user@host$ diff /dev/urandom /dev/uspto
    1. Re:More Images and Links. by LakeSolon · · Score: 1

      It's no surprise that someone involved with "The BeOS journal" (see sig), and a username of "technix4beos" can provide numerous links to archaic and ultimately useless computing devices.

      ~Lake

  15. "Graphical User Interface" by Tablizer · · Score: 1
    I got a kick out of this page where it states:

    "Operator's console of the Differential Analyzer, a literally "graphical" user interface. The operator (at left, Samuel Caldwell) manipulates a pointer by hand to follow the curves on the paper, which are then integrated or otherwise processed by the machine, which drives a plotter to make another graph as output..." [emph. added]
  16. Comment removed by account_deleted · · Score: 0

    Comment removed based on user account deletion

  17. Obviously it is. by Valar · · Score: 4, Interesting

    Of course mechanical computation is possible. The easiest example I can think of is division/multiplication. Two gears, the ratio of which is the multiplier. Turn the first gear a number of turns equal to the multiplicand and count the rotations of the second gear.

    1. Re:Obviously it is. by Anonymous Coward · · Score: 0

      That's a calculator - not a computer.

  18. Puts new meaning by abionnnn · · Score: 2, Funny

    Into the old saying that physicists love to say: "crank the handle on the mathematics".

    1. Re:Puts new meaning by Anonymous Coward · · Score: 1, Insightful

      Er, that phrase comes from mechanical hand-cranked calculators.

    2. Re:Puts new meaning by Jerf · · Score: 1

      Isn't there a "+1, Funny Ignorance" mod around here somewhere?

    3. Re:Puts new meaning by Anonymous Coward · · Score: 0

      Yeah I think that's the whole point of the post

    4. Re:Puts new meaning by abionnnn · · Score: 1

      Yeah. But that's an old example.

      Older still is pascal's gear system. So I suppose you'd crank the ol' gears of the mathematics in that case. I think they found an ancient mechanical computer, dating more than 1000 years, but they have no friggin' idea what it does.

      This one however is definetly new, and truely obfuscated in construction. I wish I have one nearby next time one of my lecturers say "crank the handle on the mathematics". :)

    5. Re:Puts new meaning by abionnnn · · Score: 1

      Isn't there a "+1 Funny Illiterate" mod around here somewhere? There's a really good reason why there's a -->NEW-- in the title. Otherwise it would have been "puts meaning". :)

    6. Re:Puts new meaning by Jerf · · Score: 1

      That's the original meaning, dufus. It is, therefore, not a new one.

  19. Reminds me off the great novel by Bruce Sterling by amarodeeps · · Score: 4, Interesting

    ...and William Gibson, called The Difference Engine. I recommend it, it's a fascinating idea, which is basically: what if computer became available much earlier, in the form of mechanical computers--they would take up entire factory buildings, and people would essentially become experts at creating these ornate ivory punchcards (if I remember correctly...). Actually, I should really pick it up and read it again.

  20. May I be the first to say... by the_twisted_pair · · Score: 5, Funny
    640 nuts and bolts should be enough for anybody

    Serious kudos due here - it's a labour of love.

    1. Re:May I be the first to say... by cjellibebi · · Score: 1
      A more accurate translation of that into the world of computational logic would be:

      5242880 flip-flops should be enough for anybody

      Now work out howmany nuts and bolts you jneed to build a flip-flop, and now, you can translate Bill Gate's quotes into Meccano. Hey - it's a hell of a lot easier porting an actual Bill Gates Monstrossity-OS to a Meccano computer.

  21. What about... by Anonymous Coward · · Score: 0

    Why does no one seems to come with the swap issue ? Such a system would surely be faster without swap... Specially if swap has to be handled manually (like, swapping the device).

  22. Now im ready by alephdelta · · Score: 1

    I'ill buy one!

    When the WorldWar 3/glacial age is over and everything is destroyed i will have an extremely powerful machine, the most powerful computer in the world.

    No, really, no one knows when this kind of inventions will be really useful. And im not a pessimist.

    1. Re:Now im ready by Anonymous Coward · · Score: 0

      Heh, after a SHTF scenario like that is complete, you can use it to make the ballistics tables for your home-brewed smoothbore cannons. It'll be like a mix of revolutionary war tools with WWI info, but hey... you'll be taking over the country.

  23. Just beautiful by tfbastard · · Score: 1

    This is a true hack, in the purest sense.

    I'm equally impressed over building it using only off the shelf parts as I am over building it at all.

    Who will be the first to port this to Lego?

  24. First Mechanical Computer by Prince+Vegeta+SSJ4 · · Score: 1

    1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 . .That's as high as I can go, a dinosaur ate my pinky toe

  25. Obligatory, it seems . . by TinheadNed · · Score: 1, Funny

    Imagine a Beowulf cluster of these . . .

    Seriously, I am totally amazed at that guy's genius. Full on Wayne's World "Not Worthy!" moment.

  26. Goodbye Althon 64... by Anonymous Coward · · Score: 0

    Hello Dodge Hemi!

  27. Other mechanical computers by Flyboy+Connor · · Score: 3, Informative

    A.K. Dewdney describes in "The Tinkertoy Computer and Other Machinations" not only the famous Tinkertoy computer, but also how a computer can be constructed entitely from ropes and pulleys. Furthermore, in "The Planiverse" he describes how a computer can be built in a two-dimensional world (quite a feat, I can tell you).

    1. Re:Other mechanical computers by cjellibebi · · Score: 1

      Just out of interest, is there a web-page that has a list of alternaive means of building computational-logic based computers, or other types of computers? I once saw a digital adding machine built up out of water flowing through pipes that formed logic-gates. I also heard of a story about someone building logic-gates that work by heating bi-metalic strips and causing them to bend.

  28. Meccano in America by uncadonna · · Score: 1
    I had some of this Meccano stuff as a kid in Canada. I didn't think it was still being produced. Great stuff, although there are, after all, parts small enough that a toddler can swallow them.

    So, is it available in the USA? If not, are lawyers at fault? (presumably) Has it ever been available in the States?

    My web search so far led to an interesting dead end. Click on the USA link from meccano.com, and you end up at a toy distributor that doesn't appear to carry the stuff!

    --
    mt
    1. Re:Meccano in America by Jeff+Duntemann · · Score: 2, Informative

      Meccano was invented in England in 1906 or so, and then when the Liverpool plant closed in the 70s, the subsidiary plant in France became the sole producer. In the 80's and 90's Meccano/France licensed the old American Erector trademark from whoever owned it, and Meccano sets were sold in the US under the Erector trademark. These were nothing like the old Gilbert Erector sets of the 1950s.

      I don't think lawyers had anything to do with Meccano's eclipse, in America or anywhere else. Lego was always better at marketing, and because Lego is plastic, is much cheaper to make. I'm not exaggerating when I estimate that there are thousands of dollars of parts in those two mechanical computers. It's not a cheap hobby, heh.

      Interestingly, Meccano Ltd. abandoned the red and green color scheme in 1964, so the parts used in this chap's difference engine are either very old, or manufactured by the third-party Meccano compatible parts vendors, the largest of which (called Exacto; no relation to the hobby knives) is in Argentina. It's really a "world system" tho most Meccano hobbyists are in Europe. I haven't bought any Meccano parts since 1997 or so, and the guy I used to buy them from has left the business. You may have to order them from Europe or South America.

      Google around on the Web; you can order sets and parts from various places, and they turn up regularly on eBay. What you're unlikely to find these days are full sets sold in hobby shops. That's OK; to do anything ambitious or interesting you have to order tons of spare parts anyway. It's not cheap, but it's a lot of fun.

      --73--

      --Jeff Duntemann
      Colorado Springs, Colorado

    2. Re:Meccano in America by ross.w · · Score: 1

      Meccano is available in Australia still. Not in the traditional sets 1-10 form, but it remains compatible. One improvement they have made is to change those slotted screw heads for hex key ones.

      They have added little plastic people a-la Lego to appeal better to younger children.

      You should be able to find an on-line store that will export if you can't get it in Canada direct.

      --
      If my call is important, why am I talking to a recording?
  29. Ok, but... by Anonymous Coward · · Score: 0

    Does it run Linux?

  30. Mechanical PDAs by scattol · · Score: 5, Interesting

    That's OK, but for the man of the 50's on the go what do you do? You get a CURTA calculator. They were said to be popular with rally drivers for instance.

    They are relatively valuable and pretty nifty calculator. You can try to get a feel for it with the simulator. Enjoy!

    1. Re:Mechanical PDAs by janbjurstrom · · Score: 1

      Also, the Curta's play a not insignificant role - as objects of desire for some old-school hacker/collector fetishists - in William Gibson's novel "All Tomorrow's Parties" (IIRC). The book had me look into them while reading it..pretty cool machines.

      --
      668.5
  31. When can we expect...? by armando_wall · · Score: 1

    When can we expect a Duke Nukem Forever port on one of these things???

    1. Re:When can we expect...? by Anonymous Coward · · Score: 0

      By the time a single person has assembled by hand all the necessary flip-flops to store the game-code and game-data, Duke Nukem should be entering Beta-stage.

  32. How long before . . . . . by theparanoidcynic · · Score: 2, Funny

    . . . . Linux gets ported to steampunk arcitecture?

    --
    Only in a Slashdot fantasy can a Slackware install turn into several hours of sex . . . . .
  33. square roots mechanically by Alien+Being · · Score: 3, Interesting

    My dad was selling those newfangled electronic Friden calculators back in the mid sixties when I was a little kid. Once in a while, he'd bring home one of the old mechanical machines that had been traded in, like this one. I'd love to have one of those babies now.

  34. It used to be by rebelcool · · Score: 1

    When I was a younger, I had a few meccano sets. This was maybe 14-15 years ago though. I wasn't too impressed with them as the parts tended to come loose and were quite wobbly.

    --

    -

  35. Man hes patient by nurb432 · · Score: 1

    Thats a lot of work to re-create something like that.

    He deserves some credit for it.

    --
    ---- Booth was a patriot ----
  36. Hush, whippersnapper. by rebelcool · · Score: 1

    Everyone knows a computer is a young woman sitting behind an adding machine.

    (at least until the 60s, thats exactly what was meant by a 'computer')

    --

    -

    1. Re:Hush, whippersnapper. by micromoog · · Score: 1

      And when people said "that's one hot computer", it had nothing to do with AMD.

    2. Re:Hush, whippersnapper. by Anonymous Coward · · Score: 0

      Wooh! I'd love to overclock that skirt.

  37. Can you at least cite it properly... by Kjella · · Score: 1

    ...it's 640k = "655360 nuts and bolts should be enough for everybody". And if it isn't, I think they have a few screws loose or missing instead.

    Kjella

    --
    Live today, because you never know what tomorrow brings
  38. I've always wanted a machine shop... by NoMoreNicksLeft · · Score: 1

    And the know-how to use it, primarily so I could build my own Babbage engine. Never ocurred to me to do it with legos. ;P

  39. The Antikathera Mechanism by bsDaemon · · Score: 5, Interesting

    big deal. This Thing is over 2,000 years old! It's an astronaumical computer and clock thingie. With gears and everything. "boo ya," as the kids say.

    1. Re:The Antikathera Mechanism by Thjorska · · Score: 0

      Imagine a b... no, no, I won't say it...

      --
      Current Karma Status: Roadkill
  40. Turing Machines are mechanical by noamt · · Score: 2, Informative

    A Turing Machine can, theoretically, do all calculations a computer can, and it's entirely mechanical.
    One can build such a machine with nuts and bolts or whatever, and solve every solvable problem.

    Still, nobody actually built such a thing, AFAIK.

  41. Update: someone did build one... by noamt · · Score: 1

    See the above wikipedia link, "A physical Turing machine".

  42. must be said by tuxzone · · Score: 0, Redundant

    Imagine a beowulf cluster of these...

  43. But... by gUmbi · · Score: 0, Redundant

    Yes, yes, it's all fine and good - but does it run Linux??

  44. Amazing. Humbling. by vannevar · · Score: 1

    What an amazing feat. Congratulations.

    For those fortunate enough to live near Silicon Valley, the original SGI building over on Shoreline has been converted to the Computer History Museum http://www.computerhistory.org/

    I saw part of this collection when it was housed at the nearby Moffit Field (NASA Ames). When you look at this stuff and see how fast things have developed, you KNOW it had to be due to extraterrestrial intervention because humans are far too bone-headed to have accomplished such feats. :)

    Of course, most of the aliens now frequent /. in order to keep an eye on how their cute little trained monkeys are doing.

  45. the pat to job security complexity is in the.... by 3seas · · Score: 1

    .... de-evolution of the computing goal of making things easier to do....

    But as MS has proven and Linux follows thru in its own way...... "make people need you is the path to success"...

    Well at least now we can hire coal shovelers into the IT business....

    all your coal belong to us....

  46. Strange-(er)-than fiction. by Anonymous Coward · · Score: 0

    " Strange. I thought Mechanical Computing was in the past"

    The mechanical meets the electrical, and is practical , possibly using fluids among other things.

  47. The tree branch in the picture. by Anonymous Coward · · Score: 0

    Perhaps this thing will take enough time to complete a problem to allow the owner to toss the broken-off tree branch that appears in the picture off the deck.

  48. Re:First post for ... by Anonymous Coward · · Score: 0

    YOU FAIL IT! On behalf of... GNAA

  49. Re:FP by Anonymous Coward · · Score: 0
    Singing telegram for Anonymous Coward:

    YOU FAIL IT!

  50. Re:Next project? The Analytical Engine! by WegianWarrior · · Score: 4, Interesting

    Charles Babbage gave up on the differiensial engine because he thought he could build a general purpose mechanical computer - the Analytical Engine! To recreate that device would really rock... if I had the time, money and (last but not least) the knowhow, I might try it myself...

    Off course, an Analytical Engine would be way larger than a Difference Engine , since it would have to include a CPU (the 'mill'), a input device (Babbage himself suggested punch cards - an idea which the early electromechanical computers picked up), an output device (Babbage wanted to built a complete, automated printingpress, curveplotter and a bell to alert the operator of errors),and last but not least a 'store' (memory - the one envisoned by Babbage would store 1000 numbers, each 50 digits long). The Analytical Enginge was to be programable - which was it great strenght compared to the Differensial Engine - in a language resembling todays assembler languages. Such a machine would be slow and lowpowered by our standards, but would have been a gigantic leap forward back in the 1830's... shame he never got around to build it.

    --
    Everything in the world is controlled by a small, evil group to which, unfortunately, no one you know belongs.
  51. See DA in Action!!! by djplurvert · · Score: 1

    To see "DA" in action rent the movie "When Worlds Collide". It's not bad as 50's sci-fi goes.

  52. not quite computeing by steam by unclefungus · · Score: 1

    granted a steam engine would be cool, but to accually compute by steam many steam pistons and levers would be needed to make the accual mechanisms, not just the drive. it's like saying desktops compute with electriciy, they realle just run off of it.

    1. Re:not quite computeing by steam by Anonymous Coward · · Score: 0

      Ummm...

      Did you just say that computers don't compute with electricity? Do you know why your CPU gets hot and needs a cooling system? I'll give you a hint: there are a lot of electrons meeting a lot of resistance as they whiz around the microscopic circuits on that silicon wafer.

      (In the steam computation idea, the drive *is* the "accual mechanism")

  53. blimey! by snellgrove2 · · Score: 2, Insightful

    um... yah, he's cleverer than me i'd say :)

  54. Cal Class Final Exam by layer3switch · · Score: 1

    "...but Professor, you told me I can bring any graphical calculator."

    --
    Advertisement: HP Customers are migrating to SUN. As well might as be burnt than being put on hold by HP's new Indian customer service rep.

    --
    "Don't let fools fool you. They are the clever ones."
  55. Rope and pully logic by NIK282000 · · Score: 1

    I've read the book "The Tinker Toy computer" and it occured to me if you have enough rope, pullies, springs and the means to assemble them you could make a machine with sufficient prossesing power to have AI. The only real obsticle would be finding all the materials and the man-power to create this machine. A warehouse full of rope could be smarter then any human, unless that human had scisors.

    --
    Dear aunt, let's set so double the killer delete select all
  56. Mechanical computers.... by RayBender · · Score: 2, Informative
    ...were actually very common in the first half of the last Century. Vannevar Bush was big in that area, and many such computers were used as artillery computers in battleships. Google "Ford computer". There were also machines that could be programmed to solve differential equations outside of the artillery problem.

    --
    Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
  57. History of Meccano by MuMart · · Score: 1
    For the interested:

    Meccano History

  58. Most computing now *is* steam powered by Anonymous Coward · · Score: 0

    Most of the electricity that we're using is created by steam power. The majority of power plants operate by creating steam from fosil fuels, or by using nuclear power (which, although very simplified, still boils water to create steam to turn turbines).

    There's only a few other methods that create power such as wind (think of that pass in California with all the wind turbines) on a large scale. New "peaker plants" generally use what is a modified jet engine to turn a turbine (but still collect waste heat to boil water).

    In the end, all power plants rely on mechanical turbines to produce the actual power.

  59. how long before someone writes a virus for it? by pedantic+bore · · Score: 2, Funny

    In order to succeed in the market today, it has to run viruses. Is someone working on version of rugrat for this beast?

    --
    Am I part of the core demographic for Swedish Fish?
  60. You've heard it before by lildogie · · Score: 1

    Imagine a beowulf cluster of these things!

  61. Konrad Zuse by chris_sawtell · · Score: 2, Informative
    They say a picture is worth a thousand words, so here is a picture of
    the first mechanical digital computer ever made.

    The whole book, The Life and Work of Konrad Zuse is well worth a read.

  62. Re:Reminds me off the great novel by Bruce Sterlin by IdahoEv · · Score: 1

    "Great novel"? Um.. it's a beatiful, incredibly well-realized world. But it has a sad excuse for a plot (a communist plot to steal a deck of punched cards that can win you the lottery) and mostly two-dimensional characters. The contents of the last page (I won't spoil it, but it's kinda lame) have absolutely nothing to do with the rest of the plot, anywhere. It's a totally gimmicky post-ending element with no function in the story.

    Great novels require more than amazing world building. Both Sterling and Gibson have written far better books than that one, though I personally think Gibson has never really matched Neuromancer in his later work.

    --
    I stole this sig from someone cleverer than me.
  63. The Firesign Theatre talked abou this by Ralph+Spoilsport · · Score: 1
    in a comedy sketch they did back in the late 1990s- they discussed the invention of the "Steam Powered Internet". However, IIRC, it was invented, Thursday, 1923.

    "It's a power so great is can ONLY be used for GOOD...

    ...or EVIL!!!!"

    RS

    --
    Shoes for Industry. Shoes for the Dead.
  64. Re:Next project? The Analytical Engine! by u38cg · · Score: 1

    He couldn't build it, as the engineering skills weren't there at the time to create some of the tolerances needed in certain components. It could easily be done nowadays - we just need some willpower and a big garage. Oh, and a big steaming pile of cash.

    --
    [FUCK BETA]
  65. Note Well by PingPongBoy · · Score: 1

    After the apocalypse we can start over one step above the abacus and slide rule.

    Can someone please build these machines at the molecular level?

    --
    Know your pads. One time pad: good for cryptography. Two timing pad: where to take your mistress.
  66. there's one in the Science Museum (London) by rkww · · Score: 1
    Read here about the Manchester University differential analyser, designed by a Professor D. R. Hartree in 1935, and inspired by MIT's analyser.

    "Hartee began trying to build a Meccano model 'more for amusement than with any serious purpose', which was so successful that, with the help of a student, Arthur Porter, he built a small differential analyser using many standard Meccano parts. It was capable of useful work, and gave good practice in 'programming' whilst the full-size analyser was under construction."

  67. Re:Next project? The Analytical Engine! by Anonymous Coward · · Score: 0

    I think someone about 10 or so years ago actually did build a working replica of his first Difference engine. They even built it restricting themselves to the precision of the tools that were available in Babbage's days. Apparently, one of the plans was drawn backwards, but they fixed that in the replica. Now, if they could do one of the Analytical engine.

  68. Wish there was a cheaper version -- Meccano? by MCRocker · · Score: 1

    The Curta is definitely a very cool gadget, but since they're collector's items, the prices can be outrageously high.

    Although the VCALC Curta Page mentions that most of the old Curta technicians who worked on the devices have made replicas at some point or other, nobody seems to be doing it today.

    With the huge interest in them (since the Scientific American article), and the high prices, I'm very surprised that nobody's making low cost replicas. I'm sure lots of geeks who are more enamoured with the technology than the history would love to have a knock-off and the patents have probably long since expired.

    --
    Signatures are a waste of bandwi (buffering...)
  69. Analog Computing by Detritus · · Score: 1
    Analog computing was useful for well-defined problems such as fire control and process control. Even with the advent of solid-state digital computers, it would be many years before they were small and cheap enough to replace analog computers.

    I've written process control software, and it's a little bit weird to be using millions of transistors to run a software emulation of a fairly simple analog circuit. The advantage is that my emulation doesn't drift with ambient temperature or component aging, and it can be tweaked without using a soldering iron.

    --
    Mea navis aericumbens anguillis abundat
  70. Re:Next project? The Analytical Engine! by RedCard · · Score: 1

    Actually, the Difference Engine #2 was built by the Science Museum in the UK and completed in 1991 to mark the bicentennial of Babbage's birth.

    It is interesting to note that while Babbage had tried to realize the difference engine #1 and the analytical engine in metal, he had not ever tried to have the difference engine #2 built.

    From the link: "Modern techniques were used in the manufacture of repeat parts but care was taken to restrict limits of precision to those achievable by Babbage."

  71. If Meccano of the 1920s had existed... by jmalin7 · · Score: 1

    That's the whole point. Babbage was stopped as much by the limitations of the era's technology as by anything else. By all accounts he was an oddball, but he was also a genius and a pioneer.

    --
    "Don't touch it, it's the history eraser button you fool!"
  72. Nice, but... by Anonymous Coward · · Score: 0

    Nice, but... does it run Windows?

  73. Nanosystems by sbszine · · Score: 1

    Rod logic is (to the best of my recollection) basically a mechanical implementation of numerical AND, OR etc. Once you have that working you're not too far from an assembly language (for assemblers, ha ha). See chapter 12 of Drexler's Nanosystems, which Stephenson presumably got the idea from.

    --

    Vino, gyno, and techno -Bruce Sterling

  74. Merkur construction kit! by Maljin+Jolt · · Score: 1

    Wow! Looking at the pictures of the machine, I recognize it is actually built from parts of the czech gadget construction kit known for decades as "Merkur".

    I used to play with this kit as child, some 35 years ago. This kit has a quite a renaissance in toy shops now here. It was designed in early sixties.

    At age of 9, I actually built a four wheeled electro powered and bowden controlled flamethrower carriage with integrated candle (flame source) and hair spray (very good flammable these days).

    I called it proudly a flame "tank", and it was fully operational at range of 40cm flame with all the consequences, if you know what I mean...

    Even later, I used the kit to prototype some computer home made peripherals back in 8-bit era, for example a punch tape reader for "tapes" made from used 35mm perforated camera films. The device was dismissed at the moment I could afford a cassette tape recorder...

    --
    There you are, staring at me again.
  75. Re:Reminds me off the great novel by Bruce Sterlin by amarodeeps · · Score: 1

    $my_previous_post =~ s|great novel|very interesting book|g; Satisfied? Sheesh, you slashdotters are so picky sometimes...

  76. you talk shit neil by Anonymous Coward · · Score: 0

    you talk shit neil