Give me 2 numbers between 20 and 50. Brady 42 and 17..... Bad maths there Brady.

@noahwelikson1100

6 жыл бұрын

Dombowerphoto I

@Dani0x1B

6 жыл бұрын

A teacher once told me "give me a 2-digit number" ad I immediatley said "one hundred and-". Thinking under pressure is hard.

@MrScotteh

6 жыл бұрын

one hundred and negative one

@knightvertrag

6 жыл бұрын

Should have been 27 🙃

@rhandhom1

5 жыл бұрын

They're Parker numbers.

So what you're saying is that... THERE ARE BILLIONS OF DOMINOES IN MY COMPUTER!? Now I know why it's always making that clicking sound. It's the dominoes falling over trying to add 1s together!

@samd3275

7 жыл бұрын

Yeah, pretty much. It's just energy being input and output through different channels. Watch out, there's dominoes in your DNA, too. And in the air! And in your food! And in pretty much every element and chemical and substance and light particle and, well, the entire universe actually.

@TheNBKiller

5 жыл бұрын

Except, with dominoes, the ouput can't be turned back off. Once you've used your line of dominoes you have to set it back up, manually.

@keiyakins

5 жыл бұрын

I mean, when you get *way* down in the physics, it is a series of electrons pushing each other around... So kinda, yeah

@minebrandon95264

4 жыл бұрын

idk for you, but for my friend it is because he has a library mouse from 1999 and he plays g-dash

@jlp1528

4 жыл бұрын

I always thought it was a hamster...

His famous words: I may have done this

I love it. Brilliant demonstration of logic gates.

@numberphile

9 жыл бұрын

camwyn256 thanks

@dosluke

9 жыл бұрын

Numberphile this is my favorite person, of all the professors that Numberphile uses. :)

@dosluke

9 жыл бұрын

Dosluke idk like seriously, I love this guy and every vid with him in it XD

@0EEVV0

8 жыл бұрын

wow thats kinda cool, i know how a computer works inside out, time to build one with 20 dominos xD

@KoHaGames_

2 жыл бұрын

Idk... I dont really like it, because it's useless after just one use. He could have chosen a Lego train or something for that.

I feel the sudden urge to build a 4-bit addition calculator in Minecraft...

@thetntsheep4075

7 жыл бұрын

abexuro What about a 16 bit computer? I love mine :)

@veristianarvico1281

5 жыл бұрын

haha

@georgesmith3292

5 жыл бұрын

where is it

@Megaman-ws8ik

5 жыл бұрын

I had the same urge, so I did!

@softlysnowing3959

4 жыл бұрын

I did that, after reading his book

For the longest time, I was wondering how in the world computers actually worked other than "This is Harddrive, it saves and boots stuff." Ironic that dominoes helped me understand than any form of computer expert.

13:40 "Want to give me 2 numbers between 20 and 50?" "Okay, 42 and 17". Since when is 17 between 20 and 50?

@gnetkuji

9 жыл бұрын

I want so badly to +1 your comment, but I don't want to spoil the 42 it already has.

@ja-vishaara

9 жыл бұрын

since..... screw natural order of numbers!

@piguy314159

9 жыл бұрын

schnapps77 And afterwards, when Matt himself chose interesting binary numbers, one of them was 55.

@Catishcat

8 жыл бұрын

1=30

@htmlguy88

8 жыл бұрын

+schnapps77 maybe under p-adic numbers ?

That's it! This is the way I am gonna introduce Boolean algebra to my future students. I love how you can introduce applications in maths that even renders it interesting to the common man, it's an absolutely ingenious method that can spark enthusiasm to those who originally had none. Beautiful.

@janosfolhoffer5239

8 жыл бұрын

+Enlightenment this video made me to start computer science and learn a programming language on my own (even though i am just 14 ) :) Indeed this is beautiful :D

@thetntsheep4075

7 жыл бұрын

PainDespairForlornEnlightenment Use Minecraft! same thing but so much more convenient.

this brings back memories of me making a computer inside of Minecraft, that was the first time I actually understood computers

@xmame100

7 жыл бұрын

Same, it taught me about half adders and full adders and how binary operators work

Now build a NOT gate with dominos.

@janosfolhoffer5239

8 жыл бұрын

+modi X Dude these are just dominos :)

@_modiX

8 жыл бұрын

+Janos Folhoffer simulate one, like in the video. :D

@_modiX

8 жыл бұрын

***** Actually I'm a software engineer and know about those things. In practice they work by using resistors, diodes and transistors. I was just trolling ;). The problem on the NOT in this kind of simulation would be, it cannot simply output 1 when no domino is triggered. You could solve it with a power connection that will not be cut up when the input is false, so the output gets true. In this simulation this would be cheated, though, because other examples are not powered separately.

@Qbe_Root

8 жыл бұрын

+modi X Two dominos: the input is a balanced heavy domino, and the output is a lighter domino which is already fallen. If the dominos are placed very accurately, the input falls right on the end of the output and balances it. #TrollPhysics

@janosfolhoffer5239

8 жыл бұрын

Qbe Root you're going to be my favourite guy from now on ... :D

At first I was unimpressed but I soon came to believe that this is possibly the best numberphile video so far! This is an ingenious way of explaining computer gates, made me excited!

@adheesh2secondsago630

2 жыл бұрын

If this was best, you are yet to meet Klein bottle guy.

@mohammadahmedragab837

Жыл бұрын

I agree with you

13:55 - "So we're gonna add 42 to 17. A bit of a *spoiler alert*, we're expecting 59" XD

binary>decimals you only have 10 fingers, but if you count on your fingers in binary then you have 1023 values. 4 to you all

@lucromel

5 жыл бұрын

I gave you're comment a 1.

@ulicqueldromal

4 жыл бұрын

I actually trained this in school and then started to communicate with a friend in ASCII using binary finger numbers. I probably don't have to tell you this, didn't go long, it's very slow...

@zachrodan7543

3 жыл бұрын

nice

@repeaterlanes8024

3 жыл бұрын

I'm surprised no one pointed out the fact 4 in binary on your fingers is the middle finger-

@nemesisurvivorleon

3 жыл бұрын

this entire exchange must be saved for posterity

I wish he would have shown a "not" gate where knocking nothing over caused a domino to be knocked over.

@andreyutiamco9201

7 жыл бұрын

Patrick Wise lel

@zeikjt

7 жыл бұрын

Easy, just have a single knocked over domino.

@ckmishn3664

7 жыл бұрын

That's what a "1" going through a "not gate" would look like, but not a "0"

@zeikjt

7 жыл бұрын

Ah you're right. Maybe a knocked over domino on the floor, and a single standing domino on top of a table? If you do it just right then maybe the one falling off the table has a chance of hitting the one on the floor in such a way that it'll spring back upright? Haha, that's the best I got.

@ckmishn3664

7 жыл бұрын

I only brought it up in the first place because I didn't think it was possible to do with dominoes. The thing is in electronics a "0" still has some tiny amount of current that a "not" gate can recognize as when it should turn on a "1". At least that's how I believe it works.

Dominos addition: 1 pizza + 1 pizza = 2 pizzas!

@awesomedude7576

7 жыл бұрын

Kanglar lol

@adizmal

7 жыл бұрын

Toto Troll, wrong. 10 pizzas = 1 *free* pizza. Everyone knows about the Domino's Rewards Program.

I am astonished. That is an incredibly clever and creative way of showing how computing works in a physical and fun way. It should have been stressed that the dominos that "block" a signal are a transistor, which are the heart and soul of any digital circuit, where the real magic happens. Once you can picture that in your head, digital circuits become immensely fun and exciting to learn.

"disproportionally excited" is what I feel of this videos!

Make a not gate with dominoes. :P Before knocking it over it'd need to be knocked over already and when you knock it over it would somehow need to put itself straight up again. If anyone can find a way to still make one, I'd be really interested! ---But don't just invert the 0 and 1.

@JoelSjogren0

9 жыл бұрын

Make a xor gate and set one of the inputs to true.

@Hwyadylaw

9 жыл бұрын

Simple. You do it the same way you do an electronic NOT gate. You use two lines. Line 1: Just a plain line that is always tripped; this is the output. Line 2: This line breaks Line 1 when it falls; this is the input When line 2 is NOT flipped, line 1 falls all the way through. When line 2 IS flipped, line 1 will be broken and NOT fall all the way through

@thatoneguy9582

6 жыл бұрын

MC_Mac_MC Knock a straight line over a record it in reverse

I always wanted to know this, and when I asked people "How do computers/calculators work?", I really meant it. I know I still don't have the big picture, but thank you so much for making such a clear demonstration on the subject!

redstone! anyone?...

@2013danrazor2015danrazor

9 жыл бұрын

nein

@theoriginaltubeofyous

9 жыл бұрын

There are much easier ways to make AND gates with redstone...

@ItsSoooooFluffy

9 жыл бұрын

Yes! I made a calculator in Minecraft made of adders which do the same thing. It's on my channel (warning: it's quite an old and crappy video)

@kisaragiayami

9 жыл бұрын

Red stone is powerful, goes over 15 meters and it still did not off

@sriramaniyer9415

6 жыл бұрын

Here

10:20 I once hacked the pentagon from Microsoft paint.

With videos like this, I just love Numberphile more and more. Boolean Algebra done ....using Dominoes ? What an insane idea ! My deepest respect, Sir !

More like "Domino Addiction".

@JLukeHypernova

8 жыл бұрын

+Petrov Theovsk i thought that was what it said when i first looked at the title

This is absolutely phenomenal. Than you so much for it! It takes me back to my Computer Engineering class in undergrad when we actually built a working binary full adder from transistor circuits. Matt, I totally get your "disproportionate excitement" at the thrill of seeing the underlying mechanics of our digital world in action! I look at that class project as one of the highlights of my college experience. This is truly a masterpiece!

I really appreciate the spoiler alert, I prefer the suspense.

Somebody needs to show this guy Minecraft.

@1987Videolover

7 жыл бұрын

he can literally make any redstone puzzle look very easy even the hardest one..

@honggiakhanh

7 жыл бұрын

that was 150weeks ago haha xD

@abdullahenaya

7 жыл бұрын

Yeah

@fdnt7_

7 жыл бұрын

hahaha xDDD

@thetntsheep4075

7 жыл бұрын

Minecraft is pretty much the same :)

"Disproportionally excited"

*Amazingly Awesome Domino Math* This is where teaching should start at the low level not the high level. You can then skip up to a useful level but the basic understanding is key. The amount of kids who learned this from Minecraft Redstone circuits is just brilliant as well.

I love how impressive "four-digit binary number" sounds at this scale... and then you remember that the biggest one is 1111, or 15.

Having made full adders with NAND gates at school this wasn't new for me, but I enjoyed the fact this was done with DOMINOS :) You should do follow up with NOT and show you can do everything with AND + NOT using Karnaugh maps and boolean algebra.

In none of the previous videos was his smile so genuinly happy. In a giddy kid kind of way. A pleasure to watch.

- Pick a number. - 42 - Of course.

I love seeing stuff like this being explained with physical objects.

I do all my calculations via dominos

@emeryshurpit8656

7 жыл бұрын

Just bring a couple Dominos to calculus! You'll be fine...

@Gold161803

7 жыл бұрын

SciencecraftYT // Sci You might need some infinitely small dominoes if you want to do calculus. They're pretty pricey, I hear.

@emeryshurpit8656

7 жыл бұрын

Gold161803 Just a tad bit

5:33 There's the magic sentence: "I'll give it a go." Totally different context now, but I can't stop noticing it when rewatching older videos.

Over my many decades of interacting with computers casually, I have always craved this knowledge. My sincerest thanks for explaining it in a way I can finally understand.

I wish Matt would write a book about Domino computing

Matt is just great, such enthusiasm. Such logic:D

I doubt you're reading comments on multi-year old Numberphile videos, Brady, but this is probably my new favorite Numberphile video. I've always wondered about the very very fundamentals about how this kind of logic stuff works, and binary, and reading about it elsewhere has just made my peabrain struggle, so I'm glad to have found this all of a sudden.

Years ago, when I was at the end of high school, I watched this video and for some reason I loved the topic. Now, 5 years later I am going to start my Master's on computer architecture at one of the best universities of the world on this topic. Came here to write a you a thank you Matt!

Oh how much more fun my electronics course would have been if this was their approach.

Does anyone else know what hes talkin bout cause of minecraft and redstone?

@dutchpropaganda558

6 жыл бұрын

slendy9600 totally

@JorgetePanete

6 жыл бұрын

slendy9600 he's*

I will actually give an exam at university on logic circuits, combinatorial logic, sequential logic and stuff like these and i am getting super exciting over dominoes, Matt is a great teacher.

To add to my main comment I will say I liked the bit where you showed how one domino nearly fell and triggered a malfunction. A problem that could be very largely reduced near to zero with a, probably bigger, more sophisticated design. So reliability is a big issue as it is also in electrical circuits.

ppl made calculators within Super Mario Maker. pretty neat stuff

Try making a NOR gate..

Very interesting and very clever. Also, if you make a straight line of dominoes and hold the one at the end vertical, then knock over the rest, if the bottoms of the dominoes don't slip as they fall over they end up approximating a curve called a tractrix.

I love how he goes on about how crazy you'd have to be, all the preparation blah blah blah, "yeah, me and a couple of friends did this." XD

This video was mindblowing! Finally I understand this concept! :D

Now make a video about lambda calculus on computerphile, so people can complain that it should be here.

This is great. it's what I learned when I studied electronics. But we only draw logic gates and explained how semiconductors create those barriers for blocking signals. Seeing it in action is brilliant.

Best explanation of the adder ever. I love how visual it is.

Yes new numberphile video! *looks at length :o OH YEAH!!

I remember learning about half and full adders, but my mind just went straight to snakes. (vipers)

So glad to see Matt Parker back! This is what gets me truly excited about computers! Thank you guys for putting in the time and brain power to carry this out

Great timing on this video. One of my Physics professors decided this week that we should all understand digital logic circuits by the next time our class meets. Ah, the joys of majoring in pure unadulterated pain.

Beyond COOL!!!!

CHALLENGE: Create a NOT gate using dominos!

@SeanFalloy

9 жыл бұрын

Can I have +/- rails?

@okaro6595

9 жыл бұрын

Of course it cannot be created without an additional signal. If we have an additional signal comparable to a clock signal, then one can simply lead it to the output and use the input signal to block it.

@SeanFalloy

9 жыл бұрын

If this thing was clocked all the delay loops they use (also referring to the large one they built) would not be necessary.

@trickytreyperfected1482

7 жыл бұрын

Global Warming Skeptic Okay, what is your profile picture? I see this everywhere and I'm really curious as to what it is.

this is one of the best video I have seen so far from numberphile, KEEP UP WITH GOOD WORK!

Lovely way to visualize two basic logic gates. This is why I love Numberphile

This is better than half the computerphile videos no offence brady

@stephenkamenar

6 жыл бұрын

how is that offensive? you just said half the computerphile videos are better than this. and this is fantastic!

@wurttmapper2200

6 жыл бұрын

Farzher Underrated

I would've liked to see a NOT gate.

This the most entertaining, enlightening, and thoroughly mind blowing video numberphile has posted in a while. Thanks a million for all that you do.

That's cool that an xor is called 'Exclusive or'. A long (long!) time ago when I learned this stuff, (mostly by myself) I learned that xor= *X or* Y (but not both) I'm wondering- why did we need to change the lighting for the slow-mo camera?

I feel special because I already knew about most of these from redstone in Minecraft...

@wigglespeedturbo6324

9 жыл бұрын

***** Never understood how that was done till I saw this...

@jordanjohnson714

9 жыл бұрын

I feel special because I knew this before Minecraft

@jonathanyang2359

9 жыл бұрын

***** You can waste hundred of hours playing with little painted blocks or you can read a website for 15 minutes to learn the same thing. You choose.

@UnderscoreZeroLP

9 жыл бұрын

Jonathan Yang You're missing the point. The point was not that Minecraft was made to teach people logic gates and that it's a great way to learn them, the point was people think it's a useless game that's a complete waste of time when it really isn't.

@cryoshakespeare4465

9 жыл бұрын

***** What Jonathan Yang fails to appreciate about Minecraft is that is potentially an instrument of play that can nurture in children creativity, exploration, and a curiosity/excitement towards something like logic gates (through the redstone mechanic). Time for freedom/play is important for any individual, young and old (but especially young), and Minecraft is undoubtedly one of the better environments to do that in.

Here's how I do addition with dominoes... Let's say you want to add 2 + 3. Stand 2 dominoes in a line, then stand 3 more. Tip them over. If 5 dominoes fall down then the answer is 5. My method is superior.

@sebastianzaczek

5 жыл бұрын

I gotta try this

@rujon288

4 жыл бұрын

Ha

I always thought computer science was not for me. This video has truly amazed me. Thank you for posting this.

This is a really cool way of explaining logic gates.

This helps with Redstone logic

Is it only me, being hipster, who played dominoes before redstone was cool?

I once tried to make logic gates using cogwheels where CW rotation meant 1 and CCW rotation meant 0. I was even able to make flip-flop circuits (with additional tricks like shifting wheels) such as RS which are basicly a computer memory.

WOW, this was amazing. Explains it in a very simple and consistent way.

Lol, cause 17 is between 20 & 50.

@zZrEtRiBuTiOnZz

10 жыл бұрын

I know, lol. I was gonna say the same thing.

It's meant to be 0 0 0 1 1 0 1 1 You did it the wrong way around

@aizenadante78

6 жыл бұрын

1-1 2-10 3-11 4-100 5-101 6-110 7-111 8-1000 9-1001 10-1010 11-1011 12-1100 13-1101 14-1110 15-1111

@aizenadante78

6 жыл бұрын

16-10000 17-10001 18-10010

The domino computer is the most fascinating thing I've ever seen in my life.

This is one of the greatest things I've ever seen! The video with the 10K dominoes is just brilliant as well!

*Even knowing how logic circuits work before hand, this video still amazed me.* The most simple of things are the ones I found the most beautiful to contemplate. #BinaryCode #ComputerScience #LogicCircuit

Interesting video! As a domino builder myself, I could predict the results before you explained them :D

@bpdolesdominoes4

9 жыл бұрын

Me too :)

@AV-op4oz

6 жыл бұрын

yay

@OonHan

6 жыл бұрын

hi i am a fan

@xTerminatorAndy

5 жыл бұрын

I'm so glad you're on here too @hevesh5 I was just thinking of you when I saw this video

@nilen

3 жыл бұрын

That is so cool!

This is without doubt the best video I have seen on youtube in the 6 years I have been here. Wow this is the most elegant explanation of logic gates I have ever seen.

I loved watching this video. It clearly explained how basic logic gates work, in an enjoyable way .

I'm cool with this being on numberphile and not computerphile because binary has been around a LOT longer than computers.

Google Play lets you watch movies anywhere using Bananas in Mirrors, and computers do your math homework for you using Dominos in Videos.

I really appreciate Matt preciseness on arranging the dominos

As an electronics engineer I must say that this is VERY COOL!

Is it possible to make NOT gate with domino?

Alright, I'm using this same logic system to make a computer in "Minecraft Pocket Edition". For those of you who've played, you know that making a computer in "Minecraft PC" is possible, but only because redstone allows you to make clocks. However, in Pocket Edition, the only redstone alternative are signs that hold up sand, and are broken by the breaking of an original block of cactus. This is a one-time us signal transmitter, and therefore cannot be used to make a clock. However, it is theoretically possible to make an infinite amount of AND gates with signs, cacti, torches, and water. These gates can all be linked up to an infinitley large output display panel. Of course, since you can't sit down and work on an infinitley large computer, this computer will only be able to compute with a limited amount of numbers, and a limited amount of calculations. But hey, it's a start! I've already designed the AND gate. I'm not sure if I want to share the design yet (for fear of people stealing my idea,) but once I'm done, I may make a youtube video describing how to make it.

@joeyhardin5903

7 жыл бұрын

Are you done yet

This is one of the best videos on Computerphile or Numberphile. It uses a simple mechanism that everyone intuitively understands in order to show how a complex machine is built from tiny parts. I love the bit of "domino engineering" that was used to make the AND and XOR gates work. The neat thing is that if you have enough dominoes, then you can build an adder of arbitrary size -- it is not merely an analogy of an adder; it *is* an adder. Wonderful visual and tactile illustration of the fact that a computer is not a magical box, nor is it something that can only be understood with advanced physics -- semiconductors are merely one of many ways to implement logic circuits, as are domino chains.

I believe that for the half and full adder, a more common notation is A for input 1, B for input 2, CIn for input 3, and S for output 1, and COut for output 2. COut is connected to a CIn if you have multiple adders working together

Still better than a Mac.

This reminds me of all that time I spent doing this in Minecraft...for fun...

This kinda blew my mind. Incredible. Why wasn't this published many years ago when I was first learning how computers work?

One of the best Numberphile videos I've seen yet. Well done Brady.

Java with dominos 👏👏👏👏👏👏

Im´m sure you´re going to love minecraft :P

I've been looking for this forever! Love "I only interact with the terminal" Lol, that's still the software layer on some level.

this is by far the best video I've ever seen in numberphile

the fact that Matt wrote the input in this order: 00 10 01 11 instead of 00 01 10 11 drives me insane!

@sleepdeep305

6 жыл бұрын

egalomon Well, technically you are supposed to read binary from left to right, as you would do in the decimal system.

what would be really impressive is if you made a NOT gate - make the output domino fall over when no input domino is pressed :P

@funicio

9 жыл бұрын

An angle?

@ImaginaryHuman072889

9 жыл бұрын

Edwin Camuy no.

@funicio

9 жыл бұрын

ImaginaryHuman072889 Why? I can put some dominoes in a really long ramp, and there's an intersection with the part where the ramp meets the ground. In a way, if I press the input BEFORE the dominoes reach that spot, I'll stop them from reaching the output, creating a 0 output. Otherwise, if I leave it alone, the dominoes in the ramp will fall and I'll get a 1.

The look on his face says it all - he really enjoys doing this :) Thank you for making me smile, this is a great video!

Hands down the best video ever on numberphile.