How do computers store images?

  Рет қаралды 382,217

Udacity

Udacity

Күн бұрын

Пікірлер: 630
@OliverBevan23
@OliverBevan23 8 жыл бұрын
Your presentation is good and energetic but slightly misleading. In reality, bitmaps aren't stored like this-each pixel is not represented with a letter from the Latin alphabet. Instead, each pixel has a colour which is defined by a string of bits, and the length of the string of bits determines the colour depth of the image. It's clear from the comments that you have confused a number of people about the method in which the images are stored. Instead of saying that each pixel is stored with a letter, you could have said that: In the black-and-white image of a cup, each pixel is stored as a 1 or a 0. If you have four colours, each pixel is stored with two bits (00, 01, 10, or 11), thereby the image has a colour depth of two bits. You've explained the use of binary and transistors in computers, but transistors don't "store" 1s and 0s. They simply allow or disallow current to flow through them. Also, Unicode is not used for storing images. Unicode is a standard for encoding symbols and letters from other languages and writing systems. I don't want to sound condescending, and correct me if I have made any mistakes; I understand this video is meant to be simple, but perhaps you've made it "too" simple.
@gauravrawal2485
@gauravrawal2485 8 жыл бұрын
Give this man a cookie.
@varunupadhyayt
@varunupadhyayt 8 жыл бұрын
I agree with you..
@qudratullahkhan4518
@qudratullahkhan4518 6 жыл бұрын
You should make a video on this topic with technical approach. This guy wants to explain the concept in a very simple way for absolute beginners.
@nikhilgoyal007
@nikhilgoyal007 6 жыл бұрын
Oliver, thanks for pointing this out. I had the same thoughts. your humble vigilance is much appreciated.
@robingurung778
@robingurung778 6 жыл бұрын
anonymous usd Yes capacitors are of course used in computer they store charges(data) That's why you found your data after switching off and on again
@brennonmitchell7753
@brennonmitchell7753 6 жыл бұрын
his little dance is cute and funny at the same time lmaooo
@alieneargaming4687
@alieneargaming4687 3 жыл бұрын
it makes me think of elon mask the time he was presenting the model 3
@XpoVehicle
@XpoVehicle 6 жыл бұрын
According to me You are the best teacher in IT sectors..👍👍👌👌
@siddharthgopi
@siddharthgopi 8 жыл бұрын
this dude is good at teaching shit
@headofgamers1027
@headofgamers1027 10 ай бұрын
Hey dude can u tech like him ans is no kid
@arghosinha1424
@arghosinha1424 6 жыл бұрын
Picture = Pi Element = El pi"x"el. That's where the "x" comes from!!
@karakurt9735
@karakurt9735 5 жыл бұрын
Pi x El =
@pabloasenjo3
@pabloasenjo3 5 жыл бұрын
Pictures are often shorten to pics, wich sounds like pix
@rajasreebhowmik7799
@rajasreebhowmik7799 5 жыл бұрын
Find X
@jeremybenson5782
@jeremybenson5782 5 жыл бұрын
Looks like Satan claiming to be the god of math. 'x' for Antichrist or mark. 'x' is also the middle Hebrew variant of the letter which Christ claimed to be "aleph and the tav." Pretty interesting.
@EntertainmentDaily2345
@EntertainmentDaily2345 4 жыл бұрын
@᪶ ᪶ someone understand this comment
@ahuttee
@ahuttee 6 жыл бұрын
Damn my computer works so hard to display hentai...
@bibekkumar4839
@bibekkumar4839 5 жыл бұрын
😂😂😂😂😂😂😂....
@bruh-qu2uh
@bruh-qu2uh 5 жыл бұрын
Indeed my man Now imagine if it shows itadaki seikei That would need like a millions of transistors
@Laughing_Cat_Meme
@Laughing_Cat_Meme 4 жыл бұрын
🤔🤔🙇‍♂️🙇‍♂️
@flock65-t5g
@flock65-t5g 4 жыл бұрын
Po**
@TheOG0xdevil
@TheOG0xdevil 3 жыл бұрын
lmao hahahahahahahahahahahahahahahahah
@inambe3987
@inambe3987 6 жыл бұрын
He is a good teacher and I loved the tutorial. I want to add something, computer stores bits(0s and 1s) in flip-flops not in transistors. Another thing is that flip-flops are actually combination of transistors and some other electronic components. A single transistor can not represent whole flip-flop.
@jassykat
@jassykat 4 жыл бұрын
Imagine explaining this to a person from 500 years ago.
@bac17.46
@bac17.46 3 ай бұрын
Amazing explaining,men keep going
@johnpro2847
@johnpro2847 5 жыл бұрын
1:40 well not quite correct. If the images are stored on a hard drive, the hard drive has no actual numbers stored. The hard drive can store nothing but a magnetic charge. A positive charge represents 1 and no charge which represents 0.The hard drive can hold lots of these small magnetic charges which in various combinations represent the different colours of each pixel
@dake-t9k
@dake-t9k 3 ай бұрын
It's called abstraction. Quit trying to sound smart. You want to get technical? A computer never stores numbers at all regardless of the medium. The energy stored in the medium represents 1s and 0s, it is not literal 1s and 0s... and actually hard drives represent the strong magnetic field between two opposing poles as a 1 and the absence of a change in magnetic field as a 0. So yes the output will be a charge or no charge, but that is not what is stored to represent said bit.
@h7opolo
@h7opolo Жыл бұрын
ah, i didn't realize each pixel needs its own transistor. i guess that makes sense and makes it easy to understand.
@anjum7872012
@anjum7872012 2 жыл бұрын
Many thanks for explaining it so simply! I have a few questions I would be very grateful if you can explain the answers. 1) How does the computer know how much of the square is filled, either white or black. In your example some squarea were partially coloured. 2) How does the computer recognise the colour being used?
@jamestheking9816
@jamestheking9816 6 жыл бұрын
6:37 "here's the real interesting bit" am i the only one that caught this pun?
@iteratedofficial
@iteratedofficial 5 жыл бұрын
nope.
@manishmishra7191
@manishmishra7191 4 жыл бұрын
Appreciate the way you kept it simple mate! Thanks for ensuring to cover all aspects too, which a rookie may have as doubts!
@flock65-t5g
@flock65-t5g 4 жыл бұрын
Welcome man
@eduardoktg8683
@eduardoktg8683 6 жыл бұрын
Answer: Yeah, actually music is stored in 1 0, because the music is a vibration for a thingie turning off and on, and the movie too, videos are combinations of photos, then u add music, ta daa
@haizekhaze8868
@haizekhaze8868 6 жыл бұрын
nice 😌
@Liggliluff
@Liggliluff 4 жыл бұрын
Everything a computer does is in 1s and 0s, and it's incredible how advanced things you can do with just that.
@aungko7686
@aungko7686 6 жыл бұрын
This is the best presentation i have ever seen!
@kaanaana9826
@kaanaana9826 2 жыл бұрын
I love Indian people. I will admit they’re my teachers at everything from math to computer classes
@tastelesstouch
@tastelesstouch 8 жыл бұрын
This video started out kind of weird but it got really good at the end
@OPTIONALWATCH
@OPTIONALWATCH 5 жыл бұрын
Each pixel varies in color, including pixels that will look like they have a gradient shading. What happens is that each one of those shades will have a number code that refers to the 1s and 0's. Each one of these shades recreate the picture. The more complex and the more pixes, the more defined the picture will be.
@stef1896
@stef1896 5 жыл бұрын
Truly bad example with letters. Colors are stored using RGB values from 0 to 255, saying white is 255 255 255, and black is 0 0 0, and all other colors are store in between. Letters are actually characters, and English characters are stored using ASCII. The range of ASCII is stored in 1 byte (8 bits), providing only 256 combinations. Too little for all these colors today.
@mustafaceylan597
@mustafaceylan597 4 жыл бұрын
The logic of 1s and 0s is pretty simple. 1 stands for true, 0 stands for false. Starting from left to right increasing the exponent of 2 (starting from 0) and adding the true members together. Any number can be obtained like this.
@praful4383
@praful4383 5 жыл бұрын
Bro... Transistor doesn't store bits... It only use for processing bits..... Bits stored into capacitors(dynamic ram) or flip flop(static ram)... N microprocessor doesn't store anything.... It only use for processing... Sometime it holds value in its registers.
@theorangecoco
@theorangecoco 5 жыл бұрын
Praful Chavan clip flops are made of transistors
@rafaelache8650
@rafaelache8650 5 жыл бұрын
he got you
@smiiks2691
@smiiks2691 4 жыл бұрын
You can store bits with a special type of transistors called: Float Gate MOSFETs. Flip-flops are made with logic gates, which are made with MOSFETS.
@maskelibalon
@maskelibalon 4 жыл бұрын
Transistor DOES store a bit when used in sequential logic circuits.
@gamerninja3048
@gamerninja3048 4 жыл бұрын
You know word pixel is PI X EL (read separate) and the full forms as told in the video. 2:41
@jaishreepatnaik9664
@jaishreepatnaik9664 4 жыл бұрын
you are amazing.... i fell in love with your teaching style... 🙏glad i found u
@amarkatare3429
@amarkatare3429 11 ай бұрын
Nice Explanation👍👍
@personal_utube
@personal_utube 6 жыл бұрын
Just appreciate the things we are getting with computers and smartphones
@allan459415
@allan459415 6 жыл бұрын
I too fell in love with transistors and bits sometime ago and have started exploring them deeply. So Hi-Fi!!!!!
@human-being
@human-being 4 жыл бұрын
Omg. Computer's are awesome, and as your explanation is. May god bless you.
@ansarqalbi8365
@ansarqalbi8365 4 жыл бұрын
Thanks sir I understand clearly first time , I like ur presentation , please make more videos Thanks a lot sir
@FidosMini
@FidosMini 6 жыл бұрын
I love u bro. I was searching this years and finally you explained very well.
@HinduHeads
@HinduHeads Жыл бұрын
Amazed to see...he is already a 70 year old professor. Hats off boy !
@cloudstrife1191
@cloudstrife1191 9 жыл бұрын
really great video, simple, well explained thank you
@LessonsInScience
@LessonsInScience 9 жыл бұрын
+Fahad Saleh Thank you Fahad.
@sixihili1956
@sixihili1956 Жыл бұрын
thanks a lot for explaining this. but where is the part 2 man ? i am interested in knowing how is for music and videos?
@abl0v3
@abl0v3 6 жыл бұрын
to be honest ...u explained it super doooper bro...
@lukebonnici5627
@lukebonnici5627 8 жыл бұрын
Thank you so much for this. I'm studying digital electronics and it all makes sense now. I love you brother
@yekendeapandey3292
@yekendeapandey3292 6 жыл бұрын
Thank you very much dude.It helped me very much to understand how computer works
@vishalghosh6097
@vishalghosh6097 6 жыл бұрын
Man ..u r just great..ur demonstration says a lot ..its clear my concept.. thank u vry much..
@shahriarmim4696
@shahriarmim4696 5 жыл бұрын
man you are literally dancing and I was literally laughing more rather concentrating
@Ag_paul
@Ag_paul Жыл бұрын
I was trying to concentrate and then your comment ruined everything for me 😂
@headofgamers1027
@headofgamers1027 10 ай бұрын
Yes your comment ruined 😂😂😂😂😂
@Monkey04981
@Monkey04981 6 ай бұрын
@@Ag_paulsame😂😂
@alieneargaming4687
@alieneargaming4687 3 жыл бұрын
the way he got that transistor from his back, i can feel his passion.
@MM-yi6zf
@MM-yi6zf 6 жыл бұрын
Nice video...ur way of teaching is very good...
@TheToyBoy
@TheToyBoy 2 жыл бұрын
Brilliantly explained. Thank you.
@ahmedmuslim
@ahmedmuslim 6 жыл бұрын
thank you for your style
@abhijeetray1369
@abhijeetray1369 6 жыл бұрын
Awesome sir...no words are enough to compliment u...
@HindiMarketer
@HindiMarketer 5 жыл бұрын
Wonderful boss. What a genius explanation it was! Your have cleared my one of the doubts which was in my mind for years. Thanks a lot . Please make some more videos like this.
@dwisetiawan3111
@dwisetiawan3111 4 жыл бұрын
Same
@diwanmuhammadali396
@diwanmuhammadali396 5 жыл бұрын
Great brother. You made it very easy.
@HarshRajAlwaysfree
@HarshRajAlwaysfree 5 жыл бұрын
I already knew this but I still watched If u liked this , u would love crash course computer science 10 times more on KZbin , its one of most entertaining courses on KZbin
@AKSHAYSAMEL03
@AKSHAYSAMEL03 6 жыл бұрын
I never think about this topic...really it's change my mind to look out htings... Thanks!
@rknaik76
@rknaik76 6 жыл бұрын
Very simple and good way of explanation. I don't care about the internals or details but the explanation is very well. Cheers!
@umaroutstanding
@umaroutstanding 6 жыл бұрын
This guy made an education video very easy to watch.
@tymothylim6550
@tymothylim6550 3 жыл бұрын
Thank you very much for this video. It was educational for me
@russelldriver6394
@russelldriver6394 3 жыл бұрын
Whoa! This blew my mind!!!!! Thank you!
@36_rahulkosme95
@36_rahulkosme95 3 жыл бұрын
Hi brother I am from India your explanation very well it help me to clear my dout ♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
@36_rahulkosme95
@36_rahulkosme95 3 жыл бұрын
Please tell me which country to belong you
@arth_chart5280
@arth_chart5280 3 жыл бұрын
When a 11 yr old teaching a 15 yr old about computers 🌝
@Wtfinc
@Wtfinc 3 жыл бұрын
love the Mathologer format.
@entertainmenthhh8731
@entertainmenthhh8731 3 жыл бұрын
I am stuck with this video till to end without thinking about to stop
@adityayadav3532
@adityayadav3532 3 жыл бұрын
You really explained this well!! Really glad bro love you 😍😍 My computer wasn't able to explain this much
@vaibhavilohani3421
@vaibhavilohani3421 4 жыл бұрын
Thank you very informative
@oofoof7282
@oofoof7282 6 жыл бұрын
This is great, no other video helped me but this is perfect.
@attalaw36
@attalaw36 2 жыл бұрын
you are amazing teacher... 💖
@manojprabakar6795
@manojprabakar6795 2 жыл бұрын
Really very nice explanation brother
@gabrielfrank2878
@gabrielfrank2878 5 жыл бұрын
When Bruno Mars quit making music and starts coding... btw, nice explanation bro :D
@Liggliluff
@Liggliluff 4 жыл бұрын
I'm sorry to say this, but his explanation is rather bad. - The most basic form of picture for a computer is a bitmap. Each colour in a picture is defined by values from 0 to 255 in a red, green and blue hue (matching our eyes). 0 to 255 is because that's how bits works in a computer, 00000000 to 11111111. So each pixel in the image simply has three values from 0 to 255 to tell how much red, green and blue that pixel is. He's right about you simply going through the image pixel by pixel. Because of this, bitmaps are huge in file size and not recommended to use. Instead we use a format called PNG, which uses lossless compression, which is much more complicated to explain.
@moisesdiaz9852
@moisesdiaz9852 4 жыл бұрын
@@Liggliluff this is not a computer scince class, so it was not necessary to get into that kind of details!
@anbuappu7640
@anbuappu7640 6 жыл бұрын
Super very nice explain thanks lot
@XX-kq8kv
@XX-kq8kv 3 жыл бұрын
Very Informative Thank You
@chromosoze
@chromosoze 6 жыл бұрын
i think computers store images by making every pixel a hex color value or something or maybe like a "channel" stores an amount of red, green, or blue for each pixel
@nikhilmuriki4694
@nikhilmuriki4694 6 жыл бұрын
Thanks alot bro liked your way of presentation
@hadiwibisana5540
@hadiwibisana5540 5 жыл бұрын
Where did you get this lecture from?
@BrotherNSZwane
@BrotherNSZwane 2 жыл бұрын
A wonderful basic lesson of binary applications.
@ruffsnap
@ruffsnap 7 жыл бұрын
This video explains this concept more easily and just better than literally any other video on KZbin. Bravo dude!
@eerr1968
@eerr1968 6 жыл бұрын
No disrespect, but it is basically the only person talking in Hindi that I could get what is saying! Thumbs up.
@deepakmuduli6394
@deepakmuduli6394 5 жыл бұрын
Love you presenter..for such an amazing explanation.
@sarveshp1727
@sarveshp1727 6 жыл бұрын
Dude we need youtubers like you
@muhfatalam9383
@muhfatalam9383 2 жыл бұрын
This is so super simple but I never think that way. Thank you
@vijayvaswani9717
@vijayvaswani9717 2 жыл бұрын
saddened by your knowledge and teaching skills. Can you please also make an video of how it changes colors and how microprocessor works with example. Appreciate it.
@anuragsrivastava5579
@anuragsrivastava5579 6 жыл бұрын
Nice explanation for beginners...thanks sir!!
@rishibharadvaaj5485
@rishibharadvaaj5485 6 жыл бұрын
Actually he is a very good teacher
@jblack8149
@jblack8149 4 жыл бұрын
Ok so now I have to see how microscopic transistors are made
@Magedamorsy
@Magedamorsy 8 жыл бұрын
You are a freaking good teacher !! Thanks for sharing
@bnageswarprasad9752
@bnageswarprasad9752 6 жыл бұрын
Outstanding explaintion brother
@technicalexpertise
@technicalexpertise 4 жыл бұрын
You just explained an algorithm behind storage of image
@203malsawmdawngkima8
@203malsawmdawngkima8 4 жыл бұрын
Thnx for sharing your knowledge
@kbhargavaramudu4242
@kbhargavaramudu4242 6 жыл бұрын
I love ur way of saying and explaintion
@ahmadmaliklife7404
@ahmadmaliklife7404 2 жыл бұрын
Sir I have a question that if two colors with same first letter what it can do for example. *Black and Blue*
@frontendprodesigner4299
@frontendprodesigner4299 6 жыл бұрын
YoungMan a'm from somalia Actually you made very nice presentation thumb👍up gy.. i come here to understand how computer store i didn't come how binary work anyway your information made me to appreciate you..
@thakurrajneeshpundir6262
@thakurrajneeshpundir6262 5 жыл бұрын
this guy has a little sweetness which disturb me
@Alviralifestyle876
@Alviralifestyle876 6 жыл бұрын
Brother.. Your way of explanation win my heart❤❤👌👌 Good job ...keep it up......
@lostmeme9862
@lostmeme9862 4 жыл бұрын
If images were stored this way, an HD movie will require more space then google has in all it's servers combined. Images are compressed and then stored.
@bikramthapa2687
@bikramthapa2687 6 жыл бұрын
just awesome video , thanks bro
@aarace7
@aarace7 6 жыл бұрын
Wow really amazing 👍👍👍
@Anuja3991
@Anuja3991 9 жыл бұрын
Great explanation!Thank you!
@namutolostephen2859
@namutolostephen2859 6 жыл бұрын
Thanks man, I added a like because your time is valuable and you sacrificed it to teach us.
@malavipande6693
@malavipande6693 4 жыл бұрын
The way of explanation is osm
@prasanrajj
@prasanrajj 6 жыл бұрын
Learned a lot brother
@S-S445
@S-S445 6 жыл бұрын
Tqsm Explaination in easier understand by anyone
@rajnandanibhawsar3105
@rajnandanibhawsar3105 7 жыл бұрын
awesome kunal sir ,u r very good teacher
@EKonMaster
@EKonMaster 5 жыл бұрын
Very good video well explain
@sagarpanchal2716
@sagarpanchal2716 6 жыл бұрын
thanks for sharing this knowledge AND nice explain
@ThuyNguyen-bu9ge
@ThuyNguyen-bu9ge 7 жыл бұрын
I love his way of teaching, and his hair.
@himanshuskushwah
@himanshuskushwah 7 жыл бұрын
His Name is Kunal Chawla.
@SachinSachin-mj3gw
@SachinSachin-mj3gw 6 жыл бұрын
he is Indian
@se-58maruaditya71
@se-58maruaditya71 6 жыл бұрын
U are a great teacher brother!! But I will be happy to know in detail about how transistors work😊😊 Thanks for video!
@akthamahmed2171
@akthamahmed2171 6 жыл бұрын
Awesome Video Thank You .
@user-ik9th1nk9n
@user-ik9th1nk9n 7 жыл бұрын
Thank you so much Sir . This is a great explanation .
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