Astute viewers will notice that it's been much longer than a week since the last video. In light of everything going on in the real world right now, I hope this can serve as a meaningful distraction. I, as I'm sure is the case for many of you as well, am unsettled by a lot and it's hard to work, or even just think. I have never felt that I've been an anxious person, and now I'm learning what real anxiety is. This pinned comment surely doesn't mean much, but to everyone watching; please be safe. Make as many technology connections with loved ones as you can, and keep your chin up.

@Leo9ine

4 жыл бұрын

Thank you for those words and for this video. Listening to you talk about the inner workings of dated technology is exactly the soothing and familiar comfort I (and all of us) need right now. It brings a sense of peace and normalcy amid the anxiety. Stay safe

@JoeHamelin

4 жыл бұрын

You stay safe too, buddy.

@RSpudieD

4 жыл бұрын

It's a crazy world out there. We don't blame you at all for the delay and wouldn't mind either if it took even longer. Stay safe!

@TechGorilla1987

4 жыл бұрын

You mean the complete media driven insanity?

@GRBtutorials

4 жыл бұрын

I... didn't notice it, probably 'cause I was at home and time passed faster (and on regional holidays, which happened to coincide with quarantine, so no remote school/work either, we start tomorrow).

If I could bring my dad back, it would be to sit with him and watch - and talk about - this video. When I was young, he would sit and explain things to me just like this. We dismantled an entire pinball machine and he showed me how every piece of it worked. Thank you for the walk down memory lane...

@carlosmontgomery4178

3 жыл бұрын

pinball or flipper? :) old-school or electronic? :) :)

@tobywarren6151

3 жыл бұрын

HEY DONT MAKE ME CRY!

@Courtj3st3r33

3 жыл бұрын

My dad has a jukebox, he's watching this next time I see him!

@raydunakin

3 жыл бұрын

That's awesome. He must have been a cool guy.

@NotCerius

3 жыл бұрын

Whoa. This really hits home, because I used to do the same with my dad. I should give him a call. And I'm sorry. :(

“Charmingly ugly and stylistically repressed” How did you find my Tinder bio

@CurtisDensmore1

4 жыл бұрын

👏

@teaser6089

4 жыл бұрын

Haha

@bsadewitz

4 жыл бұрын

Isn't that the title of a song by Morrissey?

@aronrad

4 жыл бұрын

Just kept right swiping the contact pads until someones solenoid had current going through. Classic electromechanical pick up technique from the 70s.

@HaydenX

4 жыл бұрын

@@aronrad Wait..."pick up"...you dirty, dirty punner you.

Fun fact, this mechanism makes it impossible to queue up more than one playing of What's New Pussycat by Tom Jones in a row.

@nullvoid3545

3 жыл бұрын

FALSE!!! you assume i have only 1 copy of What's New Pussycat by Tom Jones!

@liquidsleepgames3661

3 жыл бұрын

Did that once. Banned from the bar for a week.

@liquidsleepgames3661

3 жыл бұрын

@Michael Persico some who knew a good troll song

@Jdp313

3 жыл бұрын

John malney

@khatharrmalkavian3306

3 жыл бұрын

You can re-queue the currently playing song, but there's no way to get any of the other songs to be queued more than once, since the queuing signal is a single bit.

"this jukebox is what turned me into the weirdo that I am today" Omg, my grandma was right about that rock music!

I bought out the remnants of a TV and radio repair shop whose hay day was ca 1960s and 70s. Get in touch and I’ll get you those springs and relay, no charge. Lots of resistors and switches and solenoids. This could be the distraction I need.

@Earthstar_Review

4 жыл бұрын

This needs more visibility.

@calvinthedestroyer

4 жыл бұрын

@@Earthstar_Review bumping

4 жыл бұрын

@@calvinthedestroyer Bump up

@aggrotits.thunderbelch

4 жыл бұрын

⬆️⬆️

@SamHarrisonMusic

4 жыл бұрын

Amazing! when you find exactly the person you need through youtube :) what a star Nick!

I feel like a dork for how hard I laughed at "This is a literal side note", but that was just way too funny

@sevilleandcoarthouse2960

2 жыл бұрын

Ha dork

Love how this implies Fonzie’s power to make a jukebox play by hitting the side is actually kind of maybe plausible. With so much done with little leaf switches, maybe for some designs a vibration from a good smack could momentarily close a circuit that’d register a credit or start a chain that powers an operation. Neat!

@xaenon

10 ай бұрын

A mercury switch wired into the credit mechanism could do it easily

@RipOffProductionsLLC

9 ай бұрын

I wouldn't be surprised if such a critical design flaw existed in some early coin-operated machines, and I'd hate to be the engineer responsible when such an issue was discovered...

@ghostmantagshome-er6pb

7 ай бұрын

Heyyyyyyyyy

This whole machine is so insanely complex I can't even imagine how someone was able to invent it.

@overloader7900

3 жыл бұрын

How did developers developed spagghetti code?

@cmelton6796

3 жыл бұрын

@@overloader7900 They tangled the wires and chaos ensued

@control_the_pet_population

3 жыл бұрын

@Isaac Eiland-Hall I agree... the individual tasks aren't terribly complex, it's more the integration into the coherently operating whole that's the tricky part.

@ponocni1

3 жыл бұрын

Welcome back, sethbling here. Today we are making electromechanic jukebox. Its quite simple. All you need is bunch of redstone, pistons, redstone torches, repeaters, comparators. and thats about it.

@LuisMendoza-pp9qi

2 жыл бұрын

Engineers back then were far more inventive, imaginative and smart than the overpaid entitled techies coders that you can find at startups this days....

"So, let's say you selected C-5." Great, now you sunk my battleship.

@SFSAtlas

4 жыл бұрын

Have a time to throw him and the man

@KingdaToro

4 жыл бұрын

If you select C-4, the jukebox explodes.

@mapifisher

4 жыл бұрын

@@KingdaToro happens in chess sometimes

@tracyh5751

4 жыл бұрын

Selecting A1 prepares an unreasonably well seasoned steak.

@galxieranger8277

4 жыл бұрын

C-9: the machine walks away from the payload losing the round. K-9: you've just selected Baja Men's one-hit wonder V-8: the vending machines start dispensing tomato juice.

I find it very nice how almost everything in the machine is labeled, with full words & numbers and not just shortenings that you’re supposed to figure out. Probably makes maintenance a less confusing task... though how complex the machine is probably makes maintenance very difficult in the first place.

As an electrician, the amount of engineering behind this is absolutely mind blowing. I have training and experience with relays\contactors and their wiring, but this is just taking it to a whole other level. Absolutely fascinating. Thanks for taking the time to pore over those wiring diagrams and service manuals. Troubleshooting these things must have been a nightmare.

@xaenon

10 ай бұрын

It was not for the timid.

"You thought the last video was complicated?" I dunno honestly, I just like listening to how technology works, understanding it is a whole other level that I don't really try to dabble on.

@potterfanz6780

4 жыл бұрын

10:40 "I don't know. I've been staring at these schematics for hours, and my brain hurts." Ah, the joy of working on EMs.

@Darxide23

4 жыл бұрын

There's a difference between complex and complicated. This thing is complex, but it isn't very complicated.

@ChaunceyGardener

4 жыл бұрын

He went from the toaster straight to this. I heard next video is commercial aircraft hydraulics.

@IstasPumaNevada

4 жыл бұрын

@@ChaunceyGardener Maybe he'll do a collab with Wendover Productions. ;D

"I've been staring at these schematics for hours, and my brain hurts." So very relatable.

@sammiller5509

4 жыл бұрын

makes one glad that we have Grafcet now😂👍

4 жыл бұрын

As an electronics and computer science major, yes. If it's someone else's code or electronic schematics, looking for faults can be *absurdly* exhausting.

@rationalmartian

4 жыл бұрын

LOL. Yeah I grew up with one of our toilet walls having constantly changing schematics/wiring diagrams. My old fella was an Electrician down the Pit. Whenever any new equipment was installed or he moved to a district with different tackle he would pin up the drawings and smoke a few cig's while he had a dump and bone up on the diagrams until he knew them. I can still hear him. "Diagrams are allreet and sometimes needed. But it's up theer theh wants it. He had a thing about sussing out the problem while he was walking to where the problem was. And down a shithole coal mine, buggering around with big paper drawings was a pain in the arse. I should know. I ended up as a Engineer/Fitter down the same Pit. I had to do the same with hydraulics schematics and drawings on occasion. Though I wasn't as conscientious as my Dad. He was known for it.

@dstone1701

4 жыл бұрын

That's the story of my entire career as an electronics tech.

@nightcat7741

4 жыл бұрын

same feels which makes me kinda thankful I'm not currently studying this in school 😅

I really like how conversational your manner is, gentle humor but not straying too far from the subject. All carefully written, too, obviously. Your craft as a writer/performer shows to those of us with some experience along those directions. It's nice.

I never intended on knowing this much about how and why a jukebox works. Now it's 6:34 am and my alarm went off 4 minutes ago and it's time to get up and go to work. Thank you for keeping me up and not getting any sleep. I can always depend on your channel any time I'm craving a "KZread rabbit hole" experience while actually learning something.

@carlosdanielcruz3597

6 ай бұрын

Read your comment at that exact same time. Makes two of us bro 😆

"This is literally a side note" You are always a source of comedy gold, good sir.

@gamingmusicandjokesandabit1240

4 жыл бұрын

15:10

What I learned: "Out of Order" is the normal condition of this machine. It is a miracle if it's working at all.

@deathstrike

4 жыл бұрын

Wurlitzer is well known for making complex EM machines. It is somewhat similar to EM (electromechanical) pinball machined. I have a few of them and maintenance is a pain due to corroded, worn, and bent contact pins. You also have to have precise feeler gauges to measure the distance between contacts and switches. And the motor assemblies have to have a strict oiling schedule to maintain proper lubrication and to check for wear, dirt, and corrosion. Ugh it's harsh and Rowe and other manufacturers went to simpler mechanisms and transistor components to ease the workings.

@harrisonernst2990

3 жыл бұрын

@@deathstrike is Seeburg comparable to Wurlitzer in terms of complication or Rowe?

@deathstrike

3 жыл бұрын

@@harrisonernst2990 To be honest? There isn't much difference tech wise between Seeburg, Rowe, and Wurlitzer. The bulk of the "juke era" machines from the late 30s to the late 60s incorporated tube amplifiers, mechanical sun and moon gears, and a ton of copper switches. It is not unlike the early pre electronic phone systems and EM pinballs. So is one more complicated or harder to work on? Depends. Seeburg actually had a really cool console jukebox that was similar in size to a home stereo cabinet from the 50s, great little box, until it breaks. Ugh, a huge headache due to compact wiring and tighter fitted switches and gears. So the only one I would say would be more "complicated" to work on is Wurlitzer especially the "bubble tube" systems. But as the solid state era ensued relays were replaced with transistor switching, tubes and heaters were replaced by solid state amps and selectors simplified with electronic board and optical sensors. So no particular one was easier or harder to work on per se but given a choice? I'd take solid state, much easier than the pain of insuring proper gear meshes and synchronization of selector switches.

@harrisonernst2990

3 жыл бұрын

@@deathstrike thanks for the info! Very cool to learn about these machines! I have an old seeburg wallbox and I got it to work with a jukebox emulator. I found an ice cream place by my school with a seeburg jukebox and tens of wallboxes, all working! Ever since then I’ve been obsessed.

@deathstrike

3 жыл бұрын

@@harrisonernst2990 Awesome!! One word of advice, old jukes and pinball machines just be patient with them. Takes a lot of time honored elbow grease and enjoying the hobby. There is a massive amount of data on many old machines and with time, you can restore even the worst machine.

3:15 Aah the old infamous "I have no idea what this light is for" indicator.

“Wurlitzer’s way ahead of you...” sounds like a fabulous slogan.

A shame we never had hydraulic computers - "numeric overflow" would have been so much more obvious.

@two_number_nines

4 жыл бұрын

isn't the valvebody in automatic transmissions exactly that?

@MattMcIrvin

4 жыл бұрын

en.wikipedia.org/wiki/MONIAC

@MattMcIrvin

4 жыл бұрын

and: en.wikipedia.org/wiki/Water_integrator

@MattMcIrvin

4 жыл бұрын

(Terry Pratchett put a nod to MONIAC in one of his late Discworld books, "Making Money")

@nthgth

4 жыл бұрын

@@two_number_nines Good point. At least before electronically controlled transmissions

I particularly like one thing you glossed over: The "perfect-alignment-pin", in addition to aligning the record holding wheel, also mechanically locks it into place! This is a very important safety mechanism, because over time, relais will start to "stick" when energized, as the electricity heats the contacts (mainly when they become a bit dirty and rough), and thereby welds them together. In that case, the electrical interlock switch (which should stop the motor) would fail, and it would still turn with the disk-grabby-arm in there! This additional mechanical blockade will make sure this can not happen, even if the relay "breaks" at some point, and is an (almost) 100% certain way to protect your valuable disks.

If I were one of your parents, I would feel very, very proud after watching this video.

You, good sir, are a gem. Your explanations are so detailed and your passion for this stuff permeates your delivery. And don’t get me started on your sense of humour. One of the most entertaining channels about “boring” things. I’ve actually learned quite a lot here, thank you.

"Deterministic Pushdown Automaton" is the term you're looking for. It's a step below a computer, as it takes instructions, and has memory, but lacks the functionality for true computation, such as branching instructions.

@KarimElHayawan

4 жыл бұрын

+

@MrGardenofeden

4 жыл бұрын

Are you sure this cannot be achieved with a finite state machine? The number of LPs in fixed, so there is a finite number of possible states the machine can be into.

@andrewmicone99

4 жыл бұрын

Finite-state machine, a DPDA has a stack, a finite state machine doesn't have a stack. This machine doesn't have a stack.

@Stoney3K

4 жыл бұрын

@@andrewmicone99 And a "mechanical finite state machine" is just a fancy name for a cam-driven sequencer. You can also find these in washing machines as well as old VCRs where the cam operates a mode switch.

@buddyclem7328

4 жыл бұрын

@@andrewmicone99 I would argue that the machine has a kind of stack, but not a sequential one, like FIFO or FILO. The sequence follows the order of the records selected, until all the selections have been played and cleared.

10:29 RY1 is turned on by a pulse to 47. One of the contacts of RY1 itself then holds 47 high from the voltage on 32, making RY1 self-latching. The low side of RY1's coil is normally held low through RY3 to 22. When RY3 is activated, that low side is switched to 52, which continues to keep RY1 active. Near the end of the cycle, 52's ground connection is interrupted by the stepper, de-energising RY1 and releasing it.

@grn1

4 жыл бұрын

Liking and commenting to hopefully push this up to where he'll see it.

@deathkiller008

2 жыл бұрын

here to help him see this even if it is a year late!

@bhull242

Жыл бұрын

Here to help him see it even if it’s _two_ years late!

@TEAserOne

Жыл бұрын

Helping I guess

"I know how a Jukebox works." ~Neo, The Matrix, after he learns Kung Fu.

I can't thank you enough for taking me on this tour through all the questions I had as a child in bars.

Way, way back in my teens, I fed in my coins and made my selections, and I never realized what a complicated process was being initiated. The jukebox was quite a large number of complex electromechanical machines which interacted with each other to play my music. I marvel at the engineers who planned it all, but also the mechanical wizards who put all the pieces together to make it work!

@Pyrolonn

4 жыл бұрын

I always thought, "what a ripoff! Pay 10 cents for something you could play at home for free!" What I didn't understand at the time, you're paying for the delivery system, not the record. And of course the value isn't in hearing the music it's for boys and girls to meet and interact, and that of course is priceless.

@boobah5643

4 жыл бұрын

Modern equivalents are certainly no less complex; it's just you can't take the cover off and watch them 'think.'

@sharedknowledge6640

4 жыл бұрын

Bob Rogers this thing is a marvel. I’m sure they must have been interesting to service as well. I suspect a lot of the service was done under a contract at x dollars a month or year which gave the manufacturer incentive to make them reasonably reliable and do things like put light bulbs in them.

@Bobrogers99

4 жыл бұрын

It would require a well-trained service agent to keep them running smoothly and to troubleshoot problems, so I agree that most were probably under a service contract. So many little switches and relays, and so many little mechanical widgets to wear out!

@26:49 "This jukebox is actually what turned me into the weirdo I am today" Thanks, Jukebox!!!!

@XanthinZarda

4 жыл бұрын

Bitten by a radioactive jukebox, Alex had transformed in one instant!

Thank you for an absolutely wonderful pair of videos. My six year old son and I have sat transfixed through both films. I once heard someone say (of the Moulton folding bicycle) that beauty is inherent in anything that is entirely functional. I would also say that nothing is more captivating than a person talking about something that they know and love. Both are applicable to this feature. Once again, thank you.

I am constantly amazed at how engineers so long ago were able to accomplish so much with so little.

Modern Jukeboxes: yea sure ill play the song from my internal computer Old Jukeboxes: SPINNY CHOICE WHEEL GO BRRRRRRRR

@MrDuncl

4 жыл бұрын

Modern Jukeboxes. I've 5000 songs on my hard drive but I won't play any of them without a subscription. Old fashioned Jukeboxes. Load me up with 45s and I'll play them.

@BrennanYoung

4 жыл бұрын

These days we can just FTP the album tracklist directly from the artist's BBS to the daisy wheel printer if we want to see what song is coming up next

@asj3419

4 жыл бұрын

Modern jukebox: On-chip MOSFET Q3209 (used to allow bit x2 from main bus into ADC and thus playing music) has failed because a voltage fluxuation caused a signal to be in the illegal voltage range by 0.5 volts, allowing a direct path from Vcc to ground through the MOSFET and burning it out in the process. Old jukebox: Well of course all of my logic accepts AC as well as DC with transients as far as the eye can see, what bloody difference does that make?

@sovietelectioncollidingtro6231

4 жыл бұрын

_BRRRR AND THE TING GOES SKRAAA_

Rube Goldberg: "Ima make a thing to play records..." Wurlitzer: "Hold my beer."

@zohaibamir1252

4 жыл бұрын

Beer was then held on by a set of latching relays and solenoids

@buddyclem7328

4 жыл бұрын

@@zohaibamir1252 More beer was automatically ordered using a POTS land line, a rotating magnetic drum, a mechanically controlled magnetic pickup, an amplifier, and much more mechanical automation. Before hanging up, it tells the beer distributor the current time, since the mechanism was harvested from a 1940s era time annunciator. Thanks to this clever mechanism, the beer supply is uninterrupted.

@Torchedini

4 жыл бұрын

But this is not rube goldberg levels. It would be if you would put microcontrollers everywhere. But as is everything in there is needed and has function. Where as with rube goldberg machines you could delete most of the operation/logic.

@JMPDev

4 жыл бұрын

Fun fact: Mr. Goldberg was a cartoonist. He only ever drew his machines.

@abc-ni9uw

4 жыл бұрын

God sake 🥱

It really is amazing how far Spotify has come over the years

@TylerTMG

Жыл бұрын

Lol

Wow, that was interesting! I'm seeing a lot of similarities between how this does things and how things have to be done in computer programming sometimes to handle certain edge-cases etc (like the way relay 2 has to be wired slightly differently from relay 1, and based on it, even though they both work the same way apart from that... and the way it does an extra rotation to make sure there's nothing else selected before stopping... oh and the extra switches needing to be activated by the latch solenoid, to prevent people activating things by just holding down the buttons without paying) I sometimes feel like I must be doing things wrong/inefficiently by having to write extra bits of code (or add extra variables) to handle things like that, that perhaps it wouldn't be necessary if the whole thing worked a different way (although I can't find any better way to do it), but now I'm thinking that's probably just what you have to do sometimes to make sure things function reliably in all possible situations (which is what I always aim for).

@DaveZeichner

10 ай бұрын

Writing an extra bit of code to handle an edge case is nothing compared to what they had to do mechanically. (Although, logically, the same things.)

Bought a beat up statesman, at a second hand store Didn't know how to solder, but he knew for sure That one servo, felt good in his hand Didn't take long, to understand Just one relay, pinned way down low Was one one-trip circuit, to a selection row So he started probing, and never gonna stop Gotta keep on testing, someday gonna make that record pop And be a jukebox hero...

@dashcamandy2242

4 жыл бұрын

*NICE!*

@shelby3822

4 жыл бұрын

A tip of the cap sir

@BEM684

4 жыл бұрын

I'm pretty sure that's the best comment this video will get.

@shannonrhoads7099

4 жыл бұрын

You win an Internet.

@TheNebulon

4 жыл бұрын

This comment needs a donate button

Technology Connections is the only youtuber that can completely occupy your attention yet put you to sleep when brain shuts of trying to understand everything.

@EdwardMillen

2 жыл бұрын

This! I watched the first part of this last night but only got a few minutes into this second part before I had to give up and go to bed, but I wanted to get straight back into it today because it was so interesting. And I'm pleased to say I actually feel like I understand how it all works now!

@KarlaO711

2 жыл бұрын

Yeah I fall asleep too on his videos. He has such a nice tone to his voice while explaining things. :)

@meathead585

2 жыл бұрын

And such a relaxed and just wonderful sleep it turns out to be. Nothing like it.

When I was a kid, one day I found an old tape recorder but found it wasn't working right. I decided to try to fix it, even though I had no idea how the thing worked. I took it apart and found it was gummed up with a bunch of dust bunnies and dirt and the like. I cleaned it all out and it was working properly again. And I spent a lot of time watching all the mechanisms inside, seeing how they all worked together, noting the subtle and clever designs, like the bar arm that moved when I hit certain buttons (like "stop") that disengaged the other buttons and caused them to pop up. As a child, I began day-dreaming about becoming an expert on how tings like this worked, and pulling apart all sorts of appliances. I never became an engineer. Maybe I should have have. But despite the love I had for seeing how these things worked, I never did. I just want to thank you for amazing videos like this that spark that same joy I felt as a kid. You are absolutely right; delivering all this functionality through a circuit board and processor, while still cool in its own right, just isn't as amazing as this.

I've seen some of your videos through KZread's suggestions over several months occasionally and after a few videos I decided to subscribe. Well after powering through many of your videos over several days (all of which i enjoyed) I found this two video series to be my favorite by far. From the actual item in question to the flow and descriptions these just stood out to me and became my favorites. Keep doing what your doing!

Currently working as a lab technician for the electrical engineering department of my community college. In an era of embedded systems, it can be so easy to forget the painstaking effort put in by the engineers of days past. The Mechatronics students loved these videos -- Your presentation is just so endearing, inquisitive, and informative -- a surefire way to cultivate a nascent fascination, and an attitude I have always tried to demonstrate in the lab :) Always looking forward to new videos!

15:14 It's probably so that the side selection in the documentation could be consistently referred to regardless of how the user oriented the records in the carousel.

2 years later and I wanted to let you know how fantastic these videos are. I just got a Wurlitzer 3300 and am grateful for these videos to learn how these jukeboxes work. Well done!

I love this channel. I got recommended your original Sunbeam toaster video after watching a bunch of How It's Made videos back to back. The title was intriguing (I didn't think I could dislike my 4 slot toaster and boy was I wrong) and from the beginning of the video I was hooked. I love learning how things work, hence my love for How It's Made, and this channel is the perfect entertainment for that goal. It has not only answered many questions I've had about operations of common household technologies but it has also introduced me to many new things with truly ingenious designs and functions. Endlessly fascinating, to use your phrase. Thank you for the fantastic content. You have earned a subscriber and viewer for years to come.

After seeing part 1, I went to my Aunt and Uncle's house where they have an old Rock-Ola 433 GP Imperial (my best guess of name based on research) jukebox that I haven't seen in years. It still works. My uncle started talking about how he hasn't heard these songs in years, I started analyzing how the selection works, yes I opened it. I'm in a same spot where seeing this machine as a kid has lead me to my current career as a programmer. Thank you for the video.

This is mesmerizing. This satisfied my brain in a way similar to the TV show "How It's Made" on the Science channel.

@SquishyZoran

4 жыл бұрын

Same but I wish they would make new episodes and wonder why they don’t.

@nuvan83

4 жыл бұрын

dum... dum dum de-dum... whee-woo

@SpydersByte

4 жыл бұрын

used to love that show!

@PhilipSmolen

4 жыл бұрын

New Mind is an independent channel in the spirit of "How It's Made". kzread.info/dron/5_Y-BKzq1uW_2rexWkUzlA.html He does a pretty good job.

@pomonabill220

4 жыл бұрын

Yes it is satisfying. "How it's made" though doesn't go into the detail that these two videos went into. Of course, they don't have the time to do alot of detail, and sometimes is frustrating.

I'm kinda drunk, so I only get about 50% of this, but even though I don't get all of it, series like this do a fantastic job of illustrating the amount of complex logical thinking required to create the machines around us.

This is the most hectic "how do they do it" episode yet! It is funny how hard to follow, but yet easy to listen to this man is! I watch your stuff befor bed (to go to sleep) and I the morning to get my brain switched on again! Very entertaining, and very educational!

Imagine being the person who slaved over engineering these mechanical marvels, and then witnessing the digital age come around where all this can be done in a few lines of code embedded in a $0.50 chip.

@grn1

4 жыл бұрын

I imagine quite a few of those guys now program said 50 cent chips. These old electro-mechanical systems are what led to the creation of the first micro-controllers which led to computers as we know them today. The new chips are easier in many ways to use but actually designing them is a whole other story.

@bobbuilder3748

4 жыл бұрын

I imagine most of them are dead by now.

@MrDuncl

4 жыл бұрын

I'm sure they found other similar things to design. Ever seen a pen potter in operation ? kzread.info/dash/bejne/eZWfk7epldStnNI.html In the 1980s we had one at work that was bigger (A0) and an awful lot faster (and I would guess more expensive). The 21st century equivalent would be a 3D printer.

@shackman9566

4 жыл бұрын

They still need some sort of mechanical mechanism to control. And it's been my experience that those old time engineers did alot better job of building the mechanical systems. They are much more reliable and robust. Everything today is disposable.

@DOCTOR_SONG

4 жыл бұрын

Yeah !! TELL ME ABOUT!!!!! This chippy stuff just too tempremenral

"Somebody has rigged this machine so it behaves as though it always has a credit." You mean, at 5:41 they operated the "Free play switch" far right !

@Stefan-

4 жыл бұрын

Ha ha, that might be it...

@DanBowkley

4 жыл бұрын

I wonder if that's also totally bypassing the credit accumulator, making it appear dead when it's actually very much not dead yet...

@UnacceptableViews

4 жыл бұрын

@@DanBowkley you're probably right..

@millomweb

4 жыл бұрын

@@DanBowkley Probably - so coins are instantly returned.

@Doktor_Calamari

4 жыл бұрын

@@DanBowkley I feel like Alec would have tried that already. I mean, he's been swapping out relays and such.

I love mechanical logic, and the series on this jukebox just bounced that up to a new level.

My Dad was a vending machine service engineer back in the sixties and his favourite part of any machine was the coin mech. I can confirm that they are/were endlessly fascinating and satisfying.

Not goning to lie, as conventionally "ugly" as that thing is, with the purple under the nameplate and amber around the selection buttons, is has a certain beauty to it.

@eternalephemera

4 жыл бұрын

It’s really awe inspiring to think of the work that must have gone into its design for it to be so ugly.

@herzogmeow5596

4 жыл бұрын

Not that different from computer programs, things are most likely very ugly behind the scenes

@BixbyConsequence

4 жыл бұрын

Designed to be unobtrusive for toned-down bars and restaurants, as opposed to the flashy ones in diners.

@TheTerribleUsername

4 жыл бұрын

*"g o n i n g"*

@scaper8

4 жыл бұрын

@@TheTerribleUsername Ah yes, I missed a typo. The shame.

I love how absurdly complicated electro-mechanics are. I could only imagine how long it took to engineer this thing

@aleksandersuur9475

3 жыл бұрын

Engineering is not a one man job, it's typical for a team or several to work on a design for a few months or longer. Without modern engineering aids everything takes longer and has to be done in a simpler fashion, but in general this thing is fairly typical machine for the era. And I highly doubt they started from a blank sketch, for sure the company had previous experience with similar and progressively simpler machines and they might have outsourced bits of it. What really boggles the mind is the economics, it must have cost a fortune to make it back in the day even after amortizing the engineering costs and it had to earn it's keep by collecting coins at the corner of a bar. I'd really like to know what it might have cost back in the day and how that made any sense.

@rickc303

3 жыл бұрын

@@aleksandersuur9475 exactly, because the whole purpose of this thing was to make money from playing songs lol

@BaddeJimme

3 жыл бұрын

@@aleksandersuur9475 It could be regarded as a loss leader. It gives your customers music and is much cheaper than having a resident DJ, and if the DJ would spend most of the night playing requests the quality of the music will be mostly the same. That said, you should not underestimate the earning potential of a machine collecting small change in the corner. If it's playing a record every 5-10 minutes, it will collect a heck of a lot of small change over several years.

@aleksandersuur9475

3 жыл бұрын

@@BaddeJimme Yeah that makes sense, good point. The point of a bar is to sell drinks not music, music just helps the drinks flow.

@raygunsforronnie847

3 жыл бұрын

@@BaddeJimme I wouldn't characterize a juke box as a loss leader, but as another way for a tavern, restaurant, pool hall or skating rink to generate a little more "revenue per guest." The cost of designing and building an industrial-strength coin operated record player gets amortized across the 20+ year commercial life expectancy of the machine. In tavern location rentals often the coin equipment owner is also the land lord. The business pays weekly rent on the juke box, pool tables, pinball machines and other amusements from the cash boxes on those machines. Any money remaining is split between the tavern and the coin operator. If the amusements don't make their rental the tavern has to make up the difference. The whole coin operated machine biz has an interesting organized crime back story, too.

The way the pins pop up reminds me of a Strowger telephone exchange switch. I never got to see one working as I joined a telecommunication company about six years after the last one had been decommissioned. I did get to see the old machine racks in storage, but never operational. The Strowger had a spiral staircase of pins kind of arrangement that spun around with each click of the number being dialled leaving one pin sticking out just enough to trigger a pop up selector as the selector rack goes past. That dialled one digit of a phone number and sent you onto the next stage. They were the first ever automatic telephone exchange, patented in 1891.

This was bloody interesting ... thank you! And - Alec's mum and dad ... thank yous two too! Your allowing of Alex to indulge in his technology passions has given the world a very interesting chap to watch and listen to as he introduces us all to really deep insights and (often) interesting nuances about stuff. Yous done good! ;)

28:02 “Oh sh*t (mumbling) oops, I said a bad word.” Best blooper ever.

this man's sarcasm is on the level of a fine aged wine. remarkable.

@Sharonmxg

2 жыл бұрын

totally why I keep watching. His delivery gets me laughing every time. Really great informative content is like a bonus!

Loved your video. You're so thorough in your instruction of how this machine worked. It was so cool watching how this juke box worked. The most complex thing I've ever seen in operation.

I love the complexity of these machines. They are so beautiful and the way you explain how they work is outstanding. Great job.

1940s - Various "computers" are "programmed" using direct wiring and switches. Engineers do this in order to avoid the tabs vs spaces debate.

@superdingo9741

3 жыл бұрын

@@tthung8668 4 spaces beats tabs.

@drwahnsin6867

3 жыл бұрын

@@superdingo9741 4 tabs!

@someonerandom9939

3 жыл бұрын

@@cmmartti I don't use spaces because it only takes one backspace to make a potentially hard to see problem in a language that is ugly enough to use indentation to dictate bodies of control statements

@DeeSnow97

3 жыл бұрын

Anyone who uses tabs is objectively wrong for A. assuming everyone else's editor is configured the same way as theirs, and B. mixing two different types of invisible characters. The only acceptable use of tabs in all of programming is the Whitespace language.

@DeeSnow97

3 жыл бұрын

@@someonerandom9939 did you just call python ugly

The reason they're labelled side 1 & 2 might be because you can load the records either way. Side 1 could be side A or B depending on the record.

@fungi331

4 жыл бұрын

big brain moment

@joest1231

4 жыл бұрын

IIRC Jukebox discs were specially pressed, i.e. because of the limited capacity they did not have "B-sides" in the regular sense, they were all double A-sides. Also, I think the discs were actually supplied in packs, with pre-printed selection cards.

@vyratron839

4 жыл бұрын

joest1231 "double A sides" is confusing but I guess you mean they put hit songs on both sides so the jukebox wouldn't be half full of bad music.

@joest1231

4 жыл бұрын

​@@vyratron839 Yes, I started typing a description, but this explains it much better: en.wikipedia.org/wiki/A-side_and_B-side#Double_A-side . Jukebox disks were specially pressed though, so I guess referring to "Side 1" and "Side 2" on these discs avoided the offense of putting an artist on the "B-side".

@stefankrause5138

4 жыл бұрын

@@joest1231 year 2796: Archeologist: "Yes, they called it B-side, but there were also B-sides, that they have called double-A..." other Archeologist: "Fascinating!"

I am impressed how you’ve fought yourself to make these. A lot of smarts in your brain sir. Thank you

I've watched about 80% of your videos and this was the first youtube video I watched after learning I could drag the captions to different parts of the screen. And then you tell us we can do that at the end of this video! That's some wild coincidence right there. Anyway I loved this and am very grateful you are the weirdo you are, sir.

I can't even imagine the engineering that went into this for the first time. "How are we gonna do this?" "MORE SWITCHES!"

@atimholt

4 жыл бұрын

“And what do we use apart from (s)witches?”

@MrClassiccarenthusia

4 жыл бұрын

Well, according to an old fella I know, who worked for BMC/British Layland. There were entire assembly lines run off of relay logic. Engine blocks would go in one side, and all the machining and drilling, tapping etc would all be performed automatically!

@johndoe1909

4 жыл бұрын

This they way automation was done back in the days. It was common everywhere in the industry. Our telephone system back in the days made these mechanisms look trivial.

@rubiconnn

4 жыл бұрын

@@MrClassiccarenthusia That makes sense for a multimillion dollar manufacturer. This was a jukebox in a dive bar somewhere.

@Lawrence330

4 жыл бұрын

They technically still do. The entire idea of PLCs is that instead of completely rewiring a relay board every time you have a configuration change on the line, you can simple place as many relays "virtually" as possible. (Much of) the "internal wiring" is done with simple code or even with a drag/drop interface with various plant elements tied into the controller rather than to discrete relays.

That is just incredible! Incidentally, the technique of using lots of pins that pop up to stop something at specified positions is exactly the same as the tab stops in a mechanical typewriter.

@josephgaviota

4 жыл бұрын

And rather like the keyboard of a Linotype machine.

I was in a diner one night and the jukebox kept playing Sinatra's My Way over and over again until I unplugged it - much to the relief of the waitress who said it had been playing that all afternoon. Complex mechanical systems can have some pretty funny failure modes!

Your jukebox videos are ones I frequently watch to relax, I find these two so calming

Sorry for another comment, just can't stop :) These two motors and solenoids are THE FIRST EVER USELESS BOX and what a magnificent box it is! One rotating arm opens switches while another one closes them one at a time.

@Pcat0

4 жыл бұрын

If you consider this a useless box then it would be far from the first.

@snaj9989

4 жыл бұрын

@@Pcat0 Well its usefull afterall.

5:15 - Instructions: "Jukebox is on permanent free play." Maybe if you use White Out on that sentence, the credit accumulator will work again.

@bjfincher773

4 жыл бұрын

Those are labels I'm 99.9% sure Alec added himself.

@White-Wolf1969

4 жыл бұрын

@@bjfincher773 being the fact that they name Alec in them I pretty sure of it as well.

@renakunisaki

4 жыл бұрын

"I have no idea what this light is for" 😁

@THE_CARBON

8 ай бұрын

Lol

When I was in middle school, my mom let me take home a Commodore PET 4032 that I found in the school's lost and found. My mom knew how much I wanted it and I am so grateful that she dropped what she was doing to drive to school and pick it up. It recently developed an issue (I think with the internal power supply) that I haven't gotten a chance to fix yet, but I had some great times trying to comprehend the documentation for BASIC 4.0 as a thirteen year old and trying to find a Datasette reader on eBay. I'm always grateful for my mom's encouragement of my bizarre shenanigans. I have her to thank for much of the weird and wonderful things I know and love today.

In 1970, I was four years old. At a small cafe in Saskatchewan Canada while having lunch with my father, I noticed a juke box much like the one in your video. I cannot remember if it was this particular model, but I do remember it was square in shape. I wanted to try it out, so I asked my father for a dime. One dime, one song. I remember it very well even today, that the first song I ever commissioned to be played for my very own amusement, was "Raindrops Keep Falling on my Head", by BJ Thomas.

"Hey I need you to design something that can accept different coin denominations, calculate number of songs based on the total of the different coins inserted, have a user-friendly UI for users to select the calculated number of songs allowed, keep those songs in a list and play them in a queue. And no CPU, microcontroller or memory allowed. GO!"

@moconnell663

4 жыл бұрын

Tiny man in a box. I win :)

@SyncViews

4 жыл бұрын

Define "memory" though. This does have a form of memory for selection and credits, the main thing is they can be much smaller (so can store a queue in a reasonable physical space), and logic gates make dealing with numbers easier.

@jayands

4 жыл бұрын

*Mumbo Jumbo has entered the chat*

@Cypeq

4 жыл бұрын

@@SyncViews hands down this is a memory, it stores data, that's all that is required of memory by definition.

@RedwoodRhiadra

3 жыл бұрын

@Michael Persico But it's sequential access, not random!

That service manual must be a godsend. I feel like you'd never see something like that these days

@cr4zyj4ck

4 жыл бұрын

@@00O3O1B you dont need a manual showing you the internal controls of every chip and microcontroller, a circuit diagram alone can be extremely useful, as well as instructions such as "this module requires programming, or the device will not function." While the manual for electromechanical devices needs to be excessively complex to allow you to actually repair the machine, with modern devices the vast majority of the complexity is inside chips that no repairshop can fix. Desoldering such a chip from a board and soldering on a replacement is something you can do, however, and instructions on how the components of a board actually plug in to each other will allow you to repair it. You say that modern devices are endlessly more complex than these old electromechanical ones, but you can design a jukebox today to run off a mere fraction of the number of physical components that the old ones had, retaining most of the complexity for the computer programming.

We had similar devices in the old phone system that the medical clinic I used to work at used to have. You’d hear it clicking incessantly handling the 24 phone trunks and 75 extensions. Back in the days when “a bug in the system” actually meant a bug in the system, as they’d get caught up in the line selectors and prevent a connection from getting made.

This is CRAZY complicated! LOL! It's no wonder that most of these kinds of machines have stopped working over the years, because of all of the areas of potential failure, mechanical switches, etc... It's amazing that you were even able to understand and explain all of this! Wow!... You are like the perfect nerd to do that! Lol... Gotta love it though! Play up your strengths man, because you are one of the best people/channels here on KZread that I've ever found when it comes to dissecting and explaining how various devices work, which is awesomely cool! Keep up the great videos. I have high respect for what you do for those of us with curious minds, because I know that you put a LOT of time and effort into figuring stuff out AND in making these (videos)!

I think it is technically a mechanical implementation of a Finite State Automaton (FSA).

@coder0xff

4 жыл бұрын

Even modern computers are state machines. The theoretical turing machine, which has infinite storage capacity, doesn't actually exist in physical form.

@TVarmy

4 жыл бұрын

@@coder0xff yes but some state machines are more finite than others, so they're easier to diagram/describe that way

@recklessroges

4 жыл бұрын

Yes, but I think we can agree that its not Turing Complete. Hence, not a computer.

@xplinux22

4 жыл бұрын

@@recklessroges Was just about to comment on the lack of Turing completeness as well. This is an FSM, not a full general-purpose programmable computer.

@1Madlycat

4 жыл бұрын

What are you nerds talking about?

Old time telephone switchmen giggle when you say this is complicated.

@gljames24

4 жыл бұрын

Oh, I bet!

@SuperFranzs

4 жыл бұрын

Don't give him any ideas. I don't think he can fit a telephone switch in his studio.

@EVPaddy

4 жыл бұрын

@@SuperFranzs there are small ones that were used in businesses. My father had one in my room when I was a child ;)

@JoseSilveira-newhandleforYT

4 жыл бұрын

You betcha! I'm an old Strowger technician, first trained at the manufacturer (Plessey) and later a PSTN company (also did some freelance work on a few jukeboxes), many moons ago :-) Just the operations than went on since you lifted the handset at home and you got a dial tone from the PSTN it was connected to, would make many good people cringe, and this was a simple circuit...

@JoseSilveira-newhandleforYT

4 жыл бұрын

After posting the above, made a quick search online and found an overview of the Strowger system - you can have a look here: dougkerr.net/Pumpkin/articles/SXS_Overview.pdf

"this is a literal side note" 15:09 was such an underrated moment

You're a brave guy attempting to explain how these work. I worked on a 59 Wurlitzer 2300s about 10years ago and it's hands down THE most complicated machine I've ever laid eyes on. Thankfully all the selection stuff worked, but I still had to take it all out to replace one of the take out arms. It blows my mind how the engineers even planned something like this, never mind actually do it. The microchip has got a lot to answer for.

I laughed out loud at the "literal side note" 😂

If you speak to James the bald engineer at Add Ohms, might be able to provide you with guidance on how to repair the coin mechanisms electronics

@Ender06

4 жыл бұрын

or Clive from bigclivedotcom

@Uzwel

4 жыл бұрын

Or on EEVBlog

@migkillerphantom

4 жыл бұрын

No electronics in this device

@michaelwarren2391

4 жыл бұрын

@@migkillerphantom Except for the amplifier

@christo930

4 жыл бұрын

NO! There are jukebox collectors who understand these systems very well. There are jukeboxes from 1907! /watch?v=F8y2XXLRAcA There is a huge wealth of knowledge about old jukeboxes out there. Since jukeboxes were almost entirely unchanged from the beginning, at least conceptually up until the early 80s, there is a very good chance that these are known problems that are relatively easy to fix.

Interesting and instructional. I attended to the relay ladder logic controls in 11, ancient, large chillers, 2000 to 5000 ton for a large university. The 5000s being of the last York made before PLCs and HMIs were incorporated as a rule. The 5000s current limiters computing was done with a pneumatic computing relay, looked like an air regulator but a dozen diaphragm section and 6 piping ports and a number of vent holes. Its input was from a current transformer via a current to pneumatic 3-15 psi transducer. Also had pneumatic multipliers, square root extractors, divider and adders. The whole shooting match was converted to digital just before I retired. Fun, fun, fun.

And to think I was born in 1963 and used these things so many times! Incredible mechanical and electrical minds came up with this and it is very impressive! Over all it was a very good presentation and now I present another good idea since you are so good and hopefully you will do it. Back in the eighties for a while I was a "pin setter machine mechanic" for an alley full of Brunswick A-2 pin setter machines (30). I was SO impressed by how they actually worked having been a bowler for many years prior. Care to take this on if you find a way? I am sure you would do great with it given the chance.

Dude, I’m thoroughly impressed by your ability to describe these things so well. I was a VCR repairman and have always just had to know how things work, and am pretty sure you are the same. Keep up the great work.

01:25 - Of course! Most folks don't know there is usually a hidden "REJECT" button somewhere on the device, for the times when the needle gets stuck in a scratch and you get the extra-extra-extra-extra-long-play version of "MacArthur Park." The button triggers the tonearm return, but I don't know if your particular model has it. You can probably find replacement springs at a mom-and-pop hardware store... I suppose the Big Box Home Improvement Chains might have them too, check the bulk nuts 'n' bolts ("Fasteners") section. Probably in those plastic drawer organizers where you have to pick your own and write the price-per-piece on the little baggie. They have almost everything in that section - car trim panel retainer clips, replacement hardware for assemble-it-yourself furniture... Even replacement incandescent bulbs and knobs for slightly-vintage audio gear. As a child, I spent some time with a friend of my mother's and her family. Her husband worked for an emergency lighting manufacturer in the 80s, and his hobbies included jukebox restoration, pinball machine restoration, and later on, a 1-armed-bandit and a pachinko machine -- and then he got into neon. His living room boasted a massive neon display and a retired traffic light hanging from the ceiling, 4 jukeboxes (mostly Seeburg and Wurlitzer, and often he'd trade models with other collector/restorers), and a front-projection TV. To say the family was... eccentric... would be a slight understatement. At one point, they even drove a Citroen, and at another point, a Gremlin. Being the proud geek he was, he would show off the guts of each individual machine and show off its quirks. I was too young to understand half of what was going on under the hood, but it was still fascinating. (I remember he had a credenza-style model once where you dialed a rotary phone to make your selections, he didn't keep that one for very long.) Last time I saw a jukebox in real life was the last time I was in a bar - 2008 maybe? - and it was a touchscreen digital media player (128k MP3s judging by crap audio quality) with gotta-be-hip RGB LEDs, a bill validator, a credit card reader, and internet access to download more songs if the bar owner wanted to pay per track. It made me long for the days of those fugly faux-dark-walnut-veneered beasts in Pizza Hut.

@builderdex

4 жыл бұрын

McMaster-Carr online distributor has springs galore!

Geez Louise! The designer of that should be given a Nobel prize!

After watching both of these videos I feel equally in awe and mentally exhausted. Great job putting all this together!

I started out my electronics career in 1977 on 1963 vintage F-4 Phantoms. The whole plane worked like this!

5:35 Rigged the machine by flicking that useful-looking "Free play" switch"?

@TechnologyConnections

4 жыл бұрын

As far as I can tell that doesn't do anything at all. I suspect someone has modified the credit accumulator in some fashion - I've tried moving that switch back and forth and nothing changes.

@MostlyPennyCat

4 жыл бұрын

@@TechnologyConnections But you're tracing lines with a multimeter, right?

@TechnologyConnections

4 жыл бұрын

@@MostlyPennyCat Honestly no, since I have no need for the credit accumulator to work in the first place other than for novelty's sake

@Stoney3K

4 жыл бұрын

@@TechnologyConnections I'd suspect somebody just jumpered the switch or bypassed the switch in the credit accumulator so it's on free play regardless of the switch position. After all, the credit accumulator only provides nothing but a contact to the latch board that says "You can accept another selection input".

@Ugly_German_Truths

4 жыл бұрын

@@Jtzkb It honestly sounds like TC will need a whole SEASON to finickle that out :D

This was absolutely surreal to see and learn about. Working with electronics now it's amazing to see how complex electro-mechanical used to be, let alone how someone even had the ingenuity to come up with it. Amazing explanation, thank you

I absolutely love the Futura font used throughout the internal / service labelling.

Its amazing that we could put a man on the moon when we were still using electro-mechanical devices like this! What a logistical nightmare these things are, but cool as hell to watch.

@venge1894

4 жыл бұрын

You could do quite alot with electro-mechanics, but of course they took up far more space than modern computers. I would imagine being a astronaut nowadays is much more comfortable.

@benjammin2020

4 жыл бұрын

Also, the NASA engineers did all their math on slide rules! Of you don't know what a slide rules is, look it up.

@d2factotum

4 жыл бұрын

The Apollo Guidance Computer was one of the first machines to actually use silicon logic, albeit it was a few thousand discrete chips rather than the single integrated circuit you get in a modern computer.

@MisterTalkingMachine

4 жыл бұрын

CuriousMarc restored an AGC last year and has a series of videos on it up on youtube.

@benjammin2020

4 жыл бұрын

@@d2factotum wasn't the memory a grid of copper wire with looped magnets hand woven, and magnet on one diagonal vs the other diagonal were ones and zeroes?

I wish some of the engineers who built this are still alive and get to see the love you are giving their creation.

Love love love this & the other video... I’ve always found mechanics fascinating but to see the complexity to this level is amazing. Thank you! 👌🏼

29 minutes of pure complex well explained, how does this work again. Mechanical computer. Thankyou for your story at the end, and you have put many hours into this to give us the explanation of chaos. Thankyou. This is all too much for anyone.

Hello. I'm a computer engineer. When someone says "computer" these days, they're usually thinking of something along the lines of a Turning Machine. What you have here is a state machine. Even more simple than a state machine is combinational logic. Every one of these is considered a type of computer in my field. So in my personal opinion, I would say that yes, this is a computer. But no, it is not a turning machine.

@sergeant5848

4 жыл бұрын

It's a computer Captain, but not as we know it!

@KaiCalimatinus

4 жыл бұрын

Are you meaning Turing machines? I assume autocorrect had its way. Just helping any budding comp sci enthusiasts look it up easier, named after Alan Turing, the famed codebreaker and early computer scientist famous for work at Bletchly Park. Indeed, not every computer is Turning complete (able to theoretically run any program), but anything that computes logic is a computer I agree

@npgabriel

4 жыл бұрын

@@KaiCalimatinus Hah it happened to you as well

@MaxBrix

4 жыл бұрын

@@npgabriel Computers apparently do not like Alan Turing.

@acidemperor

4 жыл бұрын

Shouldn't that be Turing machine?

So first of all, let me say thanks so much for hosting this amazing video! When I gained my Electrical Engineering Degree (way back in 198humph humph humph) the field was on the cusp of Digital transformation and most things were electromechanical ("EM") with digital only being implemented into *seriously* delicate work that required finesse (which EM couldn't do well). This takes me back through to my 20's, when you had to have spit, band-aids, a good multi-meter and garage toolbox to get you through the days... good times! However, I will say one thing - your "disclaimer" at the end - it may not be something that someone today considers a "computer," but remember the original definition of computer did not include "digital" (it was around in the 1890's when the coin was termed) - it simply was a device that could work through a mathematical equation of Boolean Algebra (yes or no, 1 or 0, true/false) - these machines fully qualified that definition through positive and negative electrical surges, just as computers do today. Your argument would be better served by qualifying between "digital" and "analog" computers and I would argue that your strawman comparison of a combustion engine to a computer is not fair - combustion engines don't solve binary problems - they simply "open or close" on a set sequential pattern. It can't change that pattern depending on inputs and other variable relays that can affect or change that "open or close" pattern. Beyond that, great job! Thanks so very much again!

@Vincent_Sullivan

2 жыл бұрын

ATLBrysco; Regarding this disclaimer at the end: Not so fast! I agree that the camshaft in an ICE is not a computer but I think Alec chose the wrong component. The carburettor is indisputably an analog fluidic computer. It takes in various analog inputs such as accelerator pedal position, rate of accelerator pedal position change (accelerator pump) temperature (choke control), air pressure (bowl vent), engine rpm (via air speed through the venturi) and performs a computation that results in the output of an analog quantity of fuel fed to the engine and possibly a digital output to the transmission (if it is an automatic) that gives the transmission the signal to "kick down" to a lower gear to increase engine RPM to get the engine higher up on its power curve if high acceleration is required.

Excellent video. As a retired jukebox man i really appreciate all the work you put into these two videos. A little explanation about side 1 and side 2 in jukeboxes. ;-) At the time of this ugly unit, all jukebox manufacturers where about to change to all-number selections, No more letters. A '200' selections jukeboxe will have 100 records and the selection numbers will go from 100 to 299. Here's the thing: For all selections beginning with 1 play the 1 side (A) and all selections beginning with a 2 will play the side 2 (B). I think Wurlitzer was the last manufacturer to move to all number digital selectors.

Great set of videos. Especially liked the little bit of backstory at the very end. Thanks for sharing that, bro!