"By pressing down a special key it plays a little melody" :-)

@TSAlpha2933

3 жыл бұрын

Ich bin der musikant mit taschenrechner in der hand.

@Echin0idea

3 жыл бұрын

How big are your pockets?!

@fredriko.zachrisson9711

3 жыл бұрын

😉

@RevolutionibusOrbiumCoelestium

3 жыл бұрын

got the reference 😁👍

@jeshkam

3 жыл бұрын

@@Echin0idea Big enough.

The engineering and complexity of these mechanical machines back in the days without 3D CAD... wow

@darkcoeficient

3 жыл бұрын

This is why I feel we are declining. Now we have CAD. What do we do?

@briansmith8967

3 жыл бұрын

@@darkcoeficient Other amazing engineering feats. Oh, you were being sarcastic?

@darkcoeficient

3 жыл бұрын

@@briansmith8967 not really. What I mean is: have we achieved something more complex than this for everyday use with technologies like CAD? My answer is no. Granted, we have electronic calculators now. But we don't design things as intricate as this for mass production.

@pyramidschema8668

3 жыл бұрын

@@darkcoeficient A modern CPU has over a billion transistors and you can buy one for less than 100 bucks. It just doesn't look as complex because the things doing the work are electrons we can't see instead of gears and shafts. If you mean mechanical complexity, modern CAD does structural and fluid dynamic analysis which allows us to, for example, build cars which deform at speed to change their aerodynamic profile to better suit the driving conditions. More impressive than a gearbox which adds and subtracts IMO.

@darkcoeficient

3 жыл бұрын

@@pyramidschema8668 you missed the whole point.

I want to go back in time when the Friden machine was being developed, EXACTLY at the time they discovered they needed that “DIV STOP” button. 😉

@TheEmeraldMenOfficial

3 жыл бұрын

Friden engineers were probably Fridened of what they had created. Sorry, bad pun.

@Cypeq

2 жыл бұрын

well they didn't build one on accident, they understood quite well what it will do when division by zero happens. Perhaps the problem with this mechanical design is that it's a dumb box and does not interpret in anyway what you type. Hence it can't recognize invalid operation and just halt like computer does.

@thearousedeunuch

2 жыл бұрын

I would assume that they were very likely testing dividing something by zero to see if the machine worked, and went "Oh... oh, no.".

@robertobryk4989

8 ай бұрын

I'm somewhat surprised that this was simpler than having an electric or mechanical "all-zero detector" that would prevent the DIV button from being pressed or would not power the motor if it was.

@FyreWulff

7 ай бұрын

i think that's technically part of the halting problem so it needs an outside input to stop it.@@robertobryk4989

After a long day of working in a room full of these, you'd go to the casino for some peace and quiet. What an amazingly clever mechanism.

@gorillaau

3 жыл бұрын

Straight for a one-arm bandit?

Calculator: "I shall play you the song of my people..."

It must have been deafening to work in a room full of mechanical calculators like that.

@Dust599

3 жыл бұрын

Oh it was... mechanical typewriters where also bad really bad...

@CuriousMarc

3 жыл бұрын

And IBM keypunch machines were even worse...

@SuperAWaC

3 жыл бұрын

i am only just barely old enough to have seen a couple of the last holdouts for these types of machines, it's a very unique sound that probably doesn't exist in the world anymore, and may never again.

@sashimanu

3 жыл бұрын

Even a single teletype is quite loud, can't imagine how it sounded in a comms centre

@compu85

3 жыл бұрын

I wonder if the din of all the mechanical office equipment evened out into a kind of white noise?

For me, 60 years ago these machines were magic. Now I think they were more difficult to build than modern integrated circuits.

@aserta

3 жыл бұрын

They're not? It's essentially the same mechanism repeated per digit, then integrated with an oversight and input system. Input > repeated mechanism > output + reset + visualization. Once you split the machine in basic blocks, it's actually very easy to fix and deal with. IF you don't do that brain distinction, then yeah, looks freaking terror, but, really, once you get the blocks, you see them for what they are and it's like a walk in the park. Will admit, it's the park at night and sometimes Freddy is hiding behind some of the bushes. But you're Rambo, so it's ok, you can always brute force it. :))

@Cypeq

2 жыл бұрын

well sorry to say but that is completely utterly false. We can perhaps produce them fast, and they aren't expensive to buy but they are not easy to make. Considering the fact, machines making those chips, take months to build and months to calibrate. They result of R&D efforts of tens of thousands of brilliant people. They've been extremely difficult to make for decades. Every process improvement takes years of research, That's why there's so few companies in this business, when it comes to bleeding edge of IC manufacturing. TSMC, Samsung and Intel. Sure there are more overall but they are couple steps behind, which means almost a decade. It's fine though not every application needs fastest ICs. There is more companies building space rockets than ones fabricating best performing ICs.

@hrishikeshkashyap3715

2 жыл бұрын

@@Cypeq I agree with you.

@TheVexCortex

2 жыл бұрын

@@godografnaykvista kzread.info/dash/bejne/e4dp28WmZ7nMiMo.html It's not me in the video, but it is possible, do I get the payout?

@AlexMoreno-zj7po

8 ай бұрын

Integrated circuits may be the most complicated things humans design or build

These mechanical beauties remind me of the fact, that I remember, from my early childhood, mechanical calculators being actually used in shops until early 90s in Czechoslovakia.

This is probably the only time in history where an overdraft would be considered cool.

@RaymondHng

3 жыл бұрын

Bank: You cannot write any more checks. Your account is in overdraft. Customer: But I still have checks!

Oh man. I have one of these from my grandmother, and I am really tempted to try the restoration. After seeing all the ball bearings from the carriage fall everywhere, I'm pretty intimidated.

@MrCarGuy

3 жыл бұрын

You _must_ take pictures of each part you disassemble and organize each part into well-marked containers/bags for each subsystem. If you document it and organize you won't have many issues. Otherwise it's intimidating.

@CuriousMarc

3 жыл бұрын

@Greg Krekelberg: You bet. I bought an extra bag of replacement ball bearings!

@aserta

3 жыл бұрын

I've been putting off taking an expensive lens that nobody would touch, that i got for very cheap off ebay. There's balls all over the damn thing, and they're smaller than one mm. To quote something else, sometimes, you just have to take your balls out of your purse, and do it. Nearly finished with it, won't lie, it was horror, but i did it, got over my scare, and it's a success. Wish you well/same on your calculator, it's worth it.

@av8bvma513

8 күн бұрын

@@CuriousMarc Surely sir, you meant to say Bearing Balls.

Now I understand where the term crunching numbers comes from. 😊

I'm the operator of my Friden calculator. By pressing down a special key it plays a little melody

@TechnoBaseFreaq

3 жыл бұрын

Michael Turner Kraftwerk? Only know the German lyrics to Taschenrechner (Calculator).

@Eo_Tunun

3 жыл бұрын

Brilliant thought, Sire! ^^) kzread.info/dash/bejne/rI6omJaYiLLMnM4.html

@michaelturner4457

3 жыл бұрын

@@TechnoBaseFreaq Yeh, Kraftwerk. Pocket Calculator from Computer World (Computerwelt)

@michaelturner4457

3 жыл бұрын

I am adding And subtracting I'm controlling And dividing by zero.

Fine example of errors caused by underclocking.

@TheJunky228

3 жыл бұрын

time for an overclock! how many rpm can it be spun before it starts throwing errors? xD

@MCPicoli

3 жыл бұрын

@@TheJunky228 Seems like a task for a steampunk, alternate-universe PhotonicInduction video.

Thanks to watching your channel, I have recently become a very happy owner of a vintage HP 6114A Precision Power Supply. It was originally used by The Research Institute of Mathematical Machines in Prague. I am in the Czech Republic and classic HP devices are rare and expensive in Europe, but seeing the prices the 6114A in working condition sells for, I got a turbo bargain. Thank you again, Marc!

@acmefixer1

3 жыл бұрын

I have several HP 6114 power supplies and I've had to repair them. The electrolytic capacitors dry up and need to be replaced or a good capacitor added to them. But the cheap plastic case of the 611x power supplies will shatter into many small pieces if you try to open them up. The front and back rings break very easily, and the case itself easily breaks, too. If the rings break but the case is intact, you can use tape to hold it together. The pots get noisy and difficult to set at a given value. It's nearly impossible to find replacements. The neon light on the front can be replaced by a LED, diode and resistor. Or else use a LED and resistor on the output. If there are any other bad parts, the schematic is available. But the parts can be unique to HP. Some are very specialized, like the potted circuits. Others can be replaced with a standard part, but it may have to be specially selected for proper performance. Nowadays you can buy a new analog power supply made in Asia for fifty dollars US plus shipping. And it can handle more current than the old HPs.

Look at that monster. All mechanical, its both beautiful and terrifying at the same time. Beautiful in watching it work with the cover off, terrifying to think of having to fix it if it breaks.

OMG! I had one of these back in the late 70's that I picked up for a dollar at a local auction barn, and I never could find any documentation for it. Made some interesting noises though.😁

The complexity of this machine makes me wonder how the heck someone invented let alone build one

This is basically a mechanical cpu which takes crank rotations as clock cycles. Really cool.

My first job was with Singer Business Machines, a subsidiary of the European Friden company, in the early 1970s. I remember these mechanical calculators and the older employees who repaired them. I worked on the Friden electronic calculators that were replacing these mechanical wonders. Later, in the late 1980s, these calculators were considered obsolete, and the older employees who couldn't adjust to repairing the electronic machines, were fired.

On my Monroe automatic calculator you actually have to hold the divide stop key down until it stops. Machines which have carry gearing in the quotient register (i.e. Mercedes-Euklid) can use an even more efficient method of division, by subtracting until underflow, then shifting right and adding until it rolls back over.

sounds cavernous! imagine a room of those, the noise would be maddening!

I'm not sure what's wrong with me: watching beautiful complex mechanisms in action makes me come over all emotional. Its the same with steam engines for that matter. What is it about machines like this? I think the fact it is physical makes it easier to intuitively - and in some deeper way - appreciate just how complex and subtle it really is, and how much time has gone into the design and creation of it. Your channel is one of the more wonderful parts of the internet! Cheers.

@karolakkolo123

2 жыл бұрын

I feel the same way. I kind of wish I lived during those times to experience all the cool ideas people had with mechanical machines

We can put it in my percussion section at our next 4th of July Parade!

Quite literally a work of art.

I would never have guessed that number crunching could be so melodic.

oh my god, My uncle used to work on these back in the 60s. I had an old one as a kid. Who ever figured out build this machine was insane!!

This is so satisfying to look at - and hear!

this little machine is a mechanical marvel.

This old mechanical calculator has an interesting feature. If the electric power goes out, a person can insert the hand crank and run the calculator manually with the hand crank.

Much respect to you and Robert Baruch for your electromechanical repairs. If you wanted to put up some videos of just you rambling about stuff I would certainly be interested, but you do you.

Thanks heaps....has been a while since I experienced this first hand

This is so wild! My gran _absolutely_ worked on these things, and I never heard a word about it! It's like some strange, lost piece of history. I seriously didn't know there was a way to automate calculations without silicon.

I just tried the march on my Monroe No. 1 "High Speed Adding Calculator" and on my Marchant "Silent Speed" machines. Neither sound nearly as good as the Friden. Not surprisingly, the Silent Speed machine does a particularly poor job with the march. Some day my dad might let me have his STW-10. Then I can enjoy the Friden March properly.

@wobbers99

3 жыл бұрын

really?

that is just amazing !

I have a hand crank Monroe Model K, you earn your answer. It’s accurate, I’ve checked it. I also have a smaller model LA5 which has a motor, hope to get it working. I think I know what it needs. I paid $8 for the Model K in a thrift store and $10 for the LA5. Ironically the simpler pinwheel calculators bring more dollars. I think the 50s/60s fully automatic models can be had cheap because they almost always don’t work and they are very complex…these guys that fix them are amazing to me.

Such an object of desire, love the Friden STW-10 maybe one day I'll find one to add to my collection. Great video Marc :-)

@simontay4851

3 жыл бұрын

You need to find enough money first. I suspect working ones in good condition sell for A LOT of money.

OMG I had one of thees. I was mesmerized by it when I was a young lad.. So Cool

I was just watching your last video!

Nice video clip, keep it up, thank you for sharing it :)

I have one of these in the garage. Ill have to try this.

The mechanics in these things were so complicated you needed a calculator to work out the design. Oh hang on a minute....... ;-)

Thanks for this! I had remembered Grandpa's Frieden playing this cadence in the mid-60's... I seem to remember there were two of them. I did manage to get it into an infinite loop... I believe he unplugged it to reset it.

I really love these old mechanical machines! Great job!

Question: why does the carriage stop at the 1B mark instead of advancing to the 10B, subtracting, encountering an overflow, and then backing up to start the divide? It seems like that part of the cycle is to try and find the "edge" of the number, but I'm not understanding how it does that. Or is that a position a "hard coded " limit?

@userPrehistoricman

3 жыл бұрын

If you go frame by frame at 5:47, you can see it tries the same operation on every digit up to the 1B mark. Then, it decides not to move over the carriage at that point. Curiously, it does the same operation twice (going from 5/0 -> 4/1).

@russellhltn1396

3 жыл бұрын

@@userPrehistoricman Right. It seem to be subtracting once looking for a underflow condition. Failing to trigger one, it adds the number back and then moves to the left. When it reaches the 1B mark, it does the same, but does not advance. After adding the number back, it starts the divide sequence. At this point I think it's simple the limit of how far the carriage will go. I notice a red mark and white mark lining up, which may be some kind of limit indicator. It does suggest the calculator could "lock up" if there's a 10B number being divided by a single digit divisor, since it's going to take more than a short run of nine subtractions before the underflow hits.

LOL! They even had to add a "DIV STOP" key!

I really want to go back in time and show this to the creator of the Antikythera mechanism.

Would be awesome to get some high-speed video of all these parts with the cover off.

4:06 reminds me to the Chile military march music that is used in schools anniversary

Great video, I like

So. Many. Parts. Can't help wondering what it would cost to manufacture one of these today. $1 million? $10 million?

@eekmeout

3 жыл бұрын

well the thing with manufacturing is that the cost of the initial prototype keeps being divided down by the production units you're selling. so yes, today when no one but a few old farts would buy them, they would be terribly expensive to produce.

Interesting. I've just been experimenting with divide routines for Intel's 1976' MCS-48 (which has no hardware divide). Funnily enough my crappy first attempt gets stuck in an infinite loop on /0. It works the same way as this calculator.

I got to "play" with one of these in the sixties, it was majical.

@dwightl5863

2 жыл бұрын

I used one in an accounting class in high school in 1965-66.

it looks a little yellow, is that just the lighting or the paint fading?

Excellent :)

Now you just need to collect one of the big Monroe calculators. :-)

I'm curious about why hand cranking and not working at speed it comes up with division errors... intuition would be that it would be correct at any speed, no? I realize it's a super complicated mechanism but that just seems odd to me :(

@Starwarsfan2099

3 жыл бұрын

These machines often have catches, cams, and clutches that may need to be spinning at a certain speed to extend and catch when needed.

@eumoria

3 жыл бұрын

@@Starwarsfan2099 oh yea that makes sense after a while a clicking cam on a gear will just start floating and not 'tick' anymore still why slower operation will cause that as well but again, wayyyy complex lol

@CuriousMarc

3 жыл бұрын

Some of that may become clearer in the next episode. When it fails to carry on digit 13 and 14, it's the two spring carries that did not get unlatched, because I completely stopped turning the crank just at the wrong moment. You need a little bit of carry lever velocity for it to work.

@eumoria

3 жыл бұрын

@@CuriousMarc oh wow thank you for the reply. can't wait for the video :D

@ricardlupus

3 жыл бұрын

@@CuriousMarc What is the point of the machine being able to be hand cranked at all? Is it in case someone needs to do calculations when the power is out, or is it intended for use while servicing?

It almost looks like you could program your own march!

@Diego-zz1df

2 жыл бұрын

Someone made one play part of the Radetzky March kzread.info/dash/bejne/oXVrrpWrisXbfrw.html kzread.info/dash/bejne/i6VpvMl7XaXTn84.html

one of these days i'm going to splurge and get me a mechanical calculator or 7.... idk why, but i absolutely love watching these machines do their thing.

I was wondering what would happen if you input 999999999 as the dividend. Would it think it overflowed? Could you divide it by 0?

Pure mechanical magic☻

Man, without the covers this thing really shouts Steampunk 😎

When I started my calculator collection, a Friden STW-10 was the first one I got… :)

I'm sure my Tinnitus is from being in a room full of these .. and loads of IBM Selectric / golf ball typewriters thumping away !

Sounds like our central heating system....... Try some different patterns of 5s and 1s..... Friden Rhumba...... Friden Bossanova????

Impressive engineering considering its all mechanical.

I tried this on my Archimedes L. It's a bit slower and needs 6s instead of 5s to get the rhythm right.

@CuriousMarc >>> 👍👍

Not sneaking that into the test.

I know a place that has one and I want to see if they’ll sell it to me. I’d have to restore it, though, because I’ve tried pushing buttons and they’re stuck. I also didn’t have a power cord, but I feel like the buttons should have at least pressed.

@dwightl5863

2 жыл бұрын

If the machine is in any part of the cycle, the keys are locked out. There are mechanics under each key row that would need to be free from any interruption on an pressed keys to perform calculations.

Why it has so many row numbers?

The rhytmn reminds of Grinder from Red Alert 2. Curious how many get this without listening to it

I worked in a community where all the girls in our high school went to typist pools like this in 2:45 and all the guys went to the mill.

@rkan2

3 жыл бұрын

no 90$/week for you anymore :P

@525Lines

3 жыл бұрын

@@rkan2 Those high school guys would graduate one day and the next day have new cars because that's what a mill job got you back then, even before your first paycheck. You had a house within a year.

@rkan2

3 жыл бұрын

@@525Lines Welcome to the world after the Bretton Woods agreement.

@mfbfreak

3 жыл бұрын

@@525Lines Yyyyep. My dad was a truck driver *assistant* and immediately able to afford to rent an appartment by himself. My mother a secretary, able to rent a house by herself (crappy and old, but still, a whole house for yourself?!) Like WTF?! Jobs matching my degree turn out to be fairly rare (i was told it was easy to find a job with a degree) and most trades demand you have a diploma in that field, or just pay minimum wage which is just over half of what you need to rent a house in the non-regulated sector... The world well and truly has gone to shit since they decided rent and income don't have to follow the same increase anymore. A mortgage i can only get if i have a permanent contract job.

What about zero divided by one?

For our next trick we will convert "Jingle Bells on a touch tone phone" over to that of a rotary dial phone, then speed it up and have the Chipmunks sing along!

Please work on lagomarcino totalia , that is great machine too

nice

At least 0/0 didn't cause a space/time tear (or did it)?

@CuriousMarc

3 жыл бұрын

It did! It’s 1956 all over again ;-)

Me: Takes an hour to solve a math problem with a modern calculator. Jack Lemmon: *I'm gonna do what's called a Pro Gamer Move*

When you need a Maths degree to add one plus one.

that's the future right there heheh

My Casio can show 5318008 upside down.

@bigbaddms

3 жыл бұрын

lmiddleman best comment 🤩

lovw the bwauty shots!

Make it play Seven Nation Army

They look expensive machines back in the day

Oh, so from math perspective this machine gets correct result when dividing anything by zero - infinity :-)

@CuriousMarc

3 жыл бұрын

It sort of does! By happy mechanical accident it looks like :-)

I own one of dese

The precursor to all house/ techno/ etc. I’m calling out skrillex. Sample the REAL OG DOG!

"There's some instructions on the web on how to do it, they are _WRONG_ ..."

I think instead of 55511 we used 311

imagine the life without Electronic

The West’s answer to the abacus.

it happens at 4:01

Tengo uno quiero vender

So, there was a calculator you could use without batteries and solar :P

subitles: *[mUsIc]*

Grandpa's chiptunes

Riveting stuff

@simontay4851

3 жыл бұрын

Literally. It might have rivets holding parts together.

Kraftwerk hold my beer

Hoped you were going to play a joke and have 0/0 as pi... ;-)

@CuriousMarc

3 жыл бұрын

I did not even think about it. That would have been such a good one!

I'd like to see more time and angles of the "naked" video.

@CuriousMarc

5 ай бұрын

Right here: kzread.info/dash/bejne/mmxorNGniZOwmNI.html