Exploring How Computers Work

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Information Exploring How Computers Work

Title	:	Exploring How Computers Work
Lasting	:	18.12
Date of publication	:
Views	:	3 jt

Hi everyone! I work with computers pretty much every day, but know shamefully little about what actually goes on inside them I've been trying to remedy that recently by learning some of the (very) basics, and I thought it'd be fun to make a few videos about it along the way It's a bit different from my usual content, but I hope you'll enjoy it anyway :)brbrEdit: I see there’s some interest in getting access to the little simulation tool I made It’s not in a very user friendly state at the moment, but I’ll see about polishing it up and releasing it for free sometime soon!brbrEdit2: The simulation tool is now available here: sebastianitchio/digital-logic-simbrAlong with source code over here: githubcom/SebLague/Digital-Logic-SimbrbrIf you'd like to support me in creating more videos about programming, game development, etc I'd greatly appreciate your support on Patreonbr wwwpatreoncom/SebastianLague
Comment from : Sebastian Lague

Ah, sum of a bit
Comment from : Joejoemyo

What about adding the ability to look into each module and see the transistor network?
Comment from : RandomGgames

Just realized that the carry bit works like an extra digit
Comment from : Oren Hoai le (Pcps)

I love your channel❤
Comment from : Connor Evans

I JUST WANT TO SAY YOU ARE FREAKING AMAZING! Like seriously as soon as i can afford to i am donating money to your project asap THIS IS SINGLE-HANDEDLY THE MOST AMAZING SOFTWARE I HAVE SEEN IN FOR EVER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Please continue your amazing works You have my absolute support I'm also your new subscriber!
Comment from : Alex Go

you make this hard but simple somehow
Comment from : Devin Siegel

What is the right name for computer like this
Comment from : Ryan Gamer

This is a great explanation! Thanks! (a computer science teacher)
Comment from : Turgut Kalfaoglu

this application is great and your videos, all of them too bad god hates you still cuz your so smart but wont give a fuck about real shit
Comment from : An Anomaly, Call The SCP!

I'm making a homemade computer, and I didn't know how to order and place the logic ports, and this application helped me a lot!
Comment from : ciênciadeum

kitty :)
Comment from : Hooey Magooy

clickbait
Comment from : Rumert

alu fail when you try 7 - ( - 8) it will say 15 but it will say it is negative and carry will be off brbr-8x will be on as it is 8x
Comment from : theSYKLO

As a senior electrical and computer engineering student, this has been the best video I've seen in awhile! Explained the core of digital systems in a simple and intuitive way Subscribed
Comment from : Ant_Six

epic!
Comment from : Gabriel Kripalani

How does a not produce current if the input is off? Capacitors? But for how long?
Comment from : Ashwin Mahajan

The world of Electronics Engineering ❤
Comment from : Johith Edits

Though I've been coding for seven years, computers have seemed nothing more than magic boxes enchanted by spells, or Frankenstein-monsters animated by mad scientists—now I begin to understand Thank you
Comment from : njmordetzky

Dang, when they said "Math is really Helpful in the world" they werent kidding
Comment from : E Wick

Hello sir, at 1:40, I am always wondering how the electric go through, why the electric flows to the bottom path instead of the upper path?brbrI mean how to define the "easier path ＂for the electric to travel? Is the shortest physical distance?
Comment from : DD W

Reminds me of programming in 6502 Assembly LanguagebrI learned to count to F with that !
Comment from : Hydro Ponik

THANK YOU MAN!!! My mind is more opened now
Comment from : Adama Coulibaly

My brain just died
Comment from : Jeremy Anaya Lemonnier

That cat: I'm not cat, I'm the system
Comment from : Naursea Kart

I followed along with the video and built an unsigned 4 bit adder using wiring components in a video game that i have been developing
Comment from : ChknNugz

I’m fascinated by this and it will be so helpful in a potential career move It was very clear I think, but I got very lost
Comment from : Litehamer

Why is this so hard :/
Comment from : RealityCheck

what software of app do you use to make the visuals of the logic gates ?
Comment from : omudugavu

17:03 Can anyone explain me why -2 is 1110? Shouldn't it be 1010? Btw very good video
Comment from : Ardumania

this software you created is simply A M A Z I N G!!!!!!!!!!!!!!!!!!!!
Comment from : Kepha Ari

some of the circuitry of the gates is connected to the power source already(which is not shown in any of the explanations while they write truth table) before we apply input signals to control the transistor biasing which is used as open/close switch in the circuit, based on these controlling input signals, switch opens and close and we get the output and this output (high or low(0 or 1)) can be used to control the ckt further
Comment from : kamalpreet kaur

although gates were explained on the breadboard in this video, what most videos(including this) are missing in the explanation is the brief introduction of how the present gates are made of? if they are made up of transistors, it is better to show just one image of internal circuitry of present day gates, that will give much clear understanding to the students who are scared of these subjects
Comment from : kamalpreet kaur

Ok, a little too fast for me with the combinations of logic gates being combined, I'll have to go over it a few times for it to sink in
Comment from : Phil

watching this video to transfer the principles to The Powder Toy lol
Comment from : Greyson Reynolds

How do I get it to run?
Comment from : The man Behind the redstone

U lost me 2 minutes into the video
Comment from : Nick777✞

I love you
Comment from : mathbrah 好

note 0:49
Comment from : labcoder33

His kitten 😸
Comment from : Resta Sukmana Wijaya

Where was this when I had my electronics class smh
Comment from : Chancellor Asher

bro i made 20 bit adder Adds up to 1 million
Comment from : hi

I come back here when times are hard Thank you Thank you Thank you
Comment from : Sanjit Kumar

What if I want to get the number 15 and I can't use 8 in two's complement
Comment from : Carlos Laclaustra Roman

Must see before university
Comment from : Hippie Stereo

nice
Comment from : SHASHANK CS

I still can’t use the simulator :(
Comment from : Sourish Raikwar

Minute 1:43 "An easier path for the current to travel" Why does it not go down both paths at the same time?
Comment from : Matthew B

Michael Johnson[][][][][][][][][][][][][][][][][]

16:45 for some reason when i click on carry, it doesn’t make a one as the output, but instead just lights up the carry out signal…
Comment from : Michael Johnson[][][][][][][][][][][][][][][][][]

Hey thanks for the great Videos! I am a frontend engineer trying to build a logic simulator (a clone of yours) I had some questions there, if you can reply on it, it will be very much helpfulbr1 What's the logic behind saving a gate? I mean what do you save, when you package a gate? so that it functions the same when you create an instance of itbr2 What's the logic behind drawing straight wires? I mean how can I draw wires that can follow my mouse but still it is bending only at 90 degrees?
Comment from : Vishal Sherathiya

Why in the hell would the amount carried EVER matter? Stop worrying about what is being carried, and just add up what the ACTUAL number is That WAY WAY WAY overcomplicates it for no reason lmao You are doing twice as much for absolutely zero benefit Holy hell
Comment from : GrabnarMyers

i'm not sure what itch in my brain this has scratched but christ that was fascinating!
Comment from : R_S

What software is he using for creating those gates
Comment from : Jonathan Okello

nice video
Comment from : TheGamingDinosaurRoblox

17:53 The nice monitor 🥲
Comment from : iamemil

How do cats work? 😮
Comment from : Mikhail Romanov

This video is gold! Thank you so much for the explanation
Comment from : Gabriel Venturini

Is this game on steam?
Comment from : Nicholas Diebel

Random person with no technical knowledge who watch this vedio for fun I cant get it at all
Comment from : Lee JianXing

how do i get the decimal numbers to show
Comment from : OO #saveriggyandjonny #eatthe𝓟𝓐𝓢𝓣𝓔

Do you have a link to your simulation? It looks so fun to play around in
Comment from : Brendan Aper

So this is a 1 bit alu?
Comment from : Brian Post

yeees, i am was make my first full adder with your program thanks🎉
Comment from : Михаил

15:53 most important part in the entire video
Comment from : Rick Astley joined osama

dont confuse 10 with 10
Comment from : ascii10x

Awesome If you take notes and pause the video in some parts to think about them, its information can suffice
Comment from : delibellus

Hi Sebastian, Cool Logic simulator you made You asked for feedback, I was wondering where to put it
Comment from : Steven Heynderickx

y want to use it, but y dont want to dowload it
Comment from : Roberto Martins Valero

Нет слов, просто потрясающе
Comment from : Zain Mclean

Jesus Christ, my head hurts
Comment from : Geörg

Still have no idea how computers work 😂
Comment from : Visual One Studio

why are you sucking and licking all over the mic
Comment from : a a

Very well explained, but I would have to watch this video 10 to the nth times to actually understand it, lol
Comment from : Mac DaKnife

It's great, I fully trust this video is easy enough even for a primary student, but I'm still curious, how can you protect your monitors from the cat🤣
Comment from : Blue

This is spectecular, it's fascinating! Not only your voice and temp is so relaxing and chill, but the way how you bind boolean algebra and computer electronics with arithmetics is just fascinating! I have noticed some correlations between binary addition and some specific boolean operations as well, but thinking that arithmetic itself is built on top of combining these foundational operations into higher-level abstractions is just outstanding and gives a deeper glimpse into the design of lower-level languages like C and explains why overflowing numbers sets them to zero
Comment from : Владислав Король

is it possible to build logic out of a "threenary" computer with low, medium and high voltage? what would it be like?
Comment from : Lucas A

Bad at digital logic 😢 Feel frustrated when watching the video
Comment from : 周莘宸

There's a butter zone to gaining knowledge through curiosity Know too much and you're limited by your own knowledge of what seems to not work and if you know too little you can't grasp any newer high level knowledge
Comment from : C

How do you get the desplays 11:00
Comment from : Opixitl

Thats not enough explanation to explain how computer works
Comment from : AL Pachino

Thanks you for your beautiful work, it is always a pleasure
Comment from : franck Hebo

The wild west of computer programming is beautiful
Comment from : Zelda and Twink

I get this and/or gate stuff can do math for u But this still doesn’t help me understand how a computer works You've explained how a basic physical calculator works, which is a hardware chip in the calculator that does the maths But this doesn’t explain how software works Cause it seems with the understanding u get from this video if u want to make a "computer" that does many things you'd have to install many physical computer chips each hardwired to do different things
Comment from : Dao Seeker

You should mention that the negative number operations are signed magnitude for the one with two zeros, and 2s complement for the inverse +1
Comment from : Leo Yousif

Hii! Can u make a Circuit Simulator too!? BTW you just teached me how to use logice gates! Thanks!
Comment from : Antal Ervin

The way you animate current is awesome!!!
Comment from : Carl Parmer

The current animation on the transistor NOT gate is a little misleading You will still get current flowing through the LED but because of the resistance differences, you create a voltage divider and most of the current will flow through the transistor, but not all of it There's just not a enough current to light the LED at this point I mention this because it was a source of confusion for me after learning about Ohm's and Kirchhoff's laws
Comment from : Matt Davies

Nice
Comment from : Ahmedtijani Musa

Digital Logic Sim is so good man I'm addictted to it
Comment from : xplane this

Great 👍
Comment from : Zayn Shaheen

I think I'm gonna stop here☠💀👹
Comment from : Tom Rockroads

The design of an AND gate is based on the idea of connection in series, whereas the design of an OR gate is based on the idea of parallel connection in electrical circuitsbrThis video is suitable for beginners
Comment from : Van sf

You also have to learn how to use Boolean Algebra to draw truth tables with mathematical base-2 or binary number system, and K-maps to draw electronic circuits, such logic gates, combinational circuits which do not have any memory, sequential circuits which have memory
Comment from : Van sf

The 1st example can be explained in the language of physics, which provides physical properties of a circuit consisting of a voltage source or electric field, and an external conducting circuit which allows free electrons to run from the negative terminal to the positive terminal in a DC It is the same as all electric outlets or sockets in households and offices Whenever you plug in or connect an appliance, such as your computer, the plug will close the open circuit, which creates a path way for free electrons to move from the negative terminal to the positive terminal of the source power supply, under the electromotive forces EMF from both of the 2 terminals of the voltage supply or power source, and also for the simultaneous transmission of positive charge in the opposite direction to the direction of free electrons, or from the positive terminal to the negative terminal Electricity is not formed by merely a flow of free electrons from the negative terminal to the positive terminal as how professors of physics always teach you at universities But it can be established only when there are two opposite flows of free electrons from the negative terminal to the positive terminal, and a flow-like transmission of positive charge from atom to atom or from cation to cation in the atomic lattice structure of conductors, and from the positive terminal to the negative terminal The 2 flows have to take place simultaneously, in order for you to have electricity br The repulsive force comes from the the total negative charge on the negative terminal where free electrons carrying negative charges are accumulated, and the attractive or pulling force from the positive terminal, on which the number of atoms which have lost their electrons in the covalence, and become cations or positively charged ions, are accumulated In order to understand well how a computer works, you have to have good knowledge of both physics and electronics, but not merely computer science's hardware architecture and assembly programming language used to enhance the performances of computer hardwares
Comment from : Van sf