Two's Complement

[@komodoensis-rex]

I was having a tough time in my Systems Architecture class with this concept, so I searched your channel and sure enough you have a great video about it. You're my hero man. College is looking a lot less scary knowing I have your videos to back me up

[@BotanTechHelp]

Remember -128 and not 128 when using twos complement.

[@ps4gamers1234]

BETTER THAN MY TEACHER'S EXPLANATION😂😂

[@philiprodriguez5197]

Can you please explain when you add one, why do you put it on the second place instead of the first place? In other words i see that sometimes when you add one, it is not always in the first place.

[@Fedo0o0on]

this is better than the book xD

[@RandomPersonTime]

so how would you solve -45+23 with twos complement? do you change it to 23-45 then convert 45 with 2s complement and add?

[@brandonmyers5222]

how can i tell if the furthest left bit/digit is a sign bit or a part of the number in a four bit system does 1000=8 or is it negative 0

[@ansharora1395]

i was trying to figure out why do we invert every bit in 2s complement .... didn't find it here... but it stuck suddenly... after something u said.. LoL xD.... Thanks though.. 😁👍

[@solomonthell7589]

My problem with this whole concept is how do you differentiate between this "Sign-Magnitude form" or "Two's-Compliment form" and regular binary form. *I.e.)* If I see 11111111 written on paper why would I say this = -1 and not 511?

[@codebreakthrough]

I enjoy goof work too though. Thanks!

[@andreicosma4309]

hei Caleb! you are a GOD!

[@deedewald1707]

A complex subject taught simply !

[@andreicosma4309]

love u Caleb

[@leenanofal8097]

This was great! So much better than my textbook ;). If you weren't so young, I would have guessed that you've taught this before. Thank you for the video :).

[@Fat1Dada]

Thank you for the explanations. I have a question though, Say you have a 8 bit word, 1 0 0 0 0 0 0 1 How can you tell if it's the number -127 or the number 129?

[@alexpatrick7846]

This video was definitely more helpful than my upper-division lecture I just attended on this topic. You explained things clearly and the examples helped a ton. Keep up the good work bro!

[@solomonthell7589]

An even easier way to write the 2's compliment is to just re-write the binary exactly as you see it from right-left up to and including the first 1 and then just doing basic inversion (Or 1's complement if you will) for each binary digit from there.

[@KemAlimole]

Great video. Thanks.

[@hotterthanpeppa]

Thank you so much. Was trying to wrap my head around this vua a text book explanation...confused much. Your vid realy helped me. Now to practise. Keep up the goof work!

[@kaoutharmokrane566]

thank you so much that was helpful . but i have a question .... the positive numbers in 2's complement are the same right ? ..i mean .if the number starts with 0 (from the left) we read it the same way ( in binary) whether in 1's complement or 2's complement ?

[@codebreakthrough]

+Kaouther Mokrane Correct.

[@alizzzization]

+CalebTheVideoMaker2 im confused on the negative 2 bit being repesented as 1110 is itbecause the number you initially started with (0010) equaled to 2 and you flipped it i get that bit but then you added 1 (0001) and got 2i dont get how you got the 2 ( its at 11-30 in the video seconds before that.)

[@thawksf88]

Thanks Caleb!!! YOU'RE AWESOME

[@ling6701]

Thank you, I got this now.

[@adeelmuzaffar1050]

Great job Caleb!!! I was going over some document to learn this and it was difficult. You made it soo easy. Thanks so much.

[@alessandrokreutner5797]

Why do we have to add 1 after swichting the 1 to 0 and the 0 to one?

[@afifatehseen2601]

Because switching 0s to 1s and 1s to 0s is "1's Complement" and by adding 1 it become "2s complement"

[@abhinavshobhit7783]

you made these things really easy to understand. Thanks

[@tshegodipale]

9 years later.... someone somewhere in the world is still saying, "I can finally scratch out that lecturers notes and learn from this amazing channel!💥💥"

[@ranakrakacan1881]

you are so much better than my book.thanks a lot

[@kmoore7498]

Thank you, you made Two's Complement more understandable. Being COMPLETELY new to this, I was confused as to why you carried the "1" when you did. Maybe that was in another video. I eventually figured it out but that was the only part I didn't understand at first.

[@alitabrizi633]

Wow good job man, explained very well, loved how detailed it was.

[@madnc6612]

Anyone know how to represent -32 in 2's complement using 6 bits?

[@jayamcfaya]

you are better than my cse teacher when it comes to explaining, thank you!:)

[@Benstyping]

I thought it went from 0 - 7, how all of a sudden did you jump from it being into two sets of positive and negative numbers?

[@codebreakthrough]

Benami Ark I'm showing that if you make a number signed (giving it the ability to be positive or negative), you must now accommodate for negatives and positives in the same amount of space. The far most left bit becomes a sign bit, meaning it decides whether it is positive or negative. If you had the same range of numbers unsigned then you get 0-7

[@sarapalacio9722]

Thank u! Ready for my Quiz now! :) I hope .

[@sarahconnolly9889]

thank you so much, so helpfull god bless you

[@Sleepwalker9]

Very detailed explanation, Thank you so much!!

[@אוריאגמון-ג5מ]

Thanks! that video really helped me understand the method much better!

[@Boogie-rw9bf]

nice work keep it up my brother

[@HiddenLotus]

thank you thank you thank you! my lab homework was killing me XD

[@aslanusta1275]

Thank you so much.

[@greyfoxninja1239]

Thanks for the videos I found them very helpful for upcoming classes.

[@aiman_yt]

Thank you very much.

[@amirah.elghanam5035]

wow u r awesome! please keep making more videos :D

[@juanpaul6141]

why did my teacher made 32 spaces to place the binary numbers from 0 to 31 instead you are using a 8 spaces place holder.. thanks

[@pandeni4512]

When you're adding the one, you don't really show how you get the result. You just kind of do it by yourself and write it down.

[@TheJaishree16]

you are an excellent teacher........ plz do post some more videos on binary subtraction.....

[@raghuramsatish9019]

really good video very clear and easy to understand ,good job

[@nathancrawley5212]

Awesome dude thanks for making the video

[@nagarajsajjan2798]

Thanks a lot for uploading

[@Hetsapa]

Thank you so so so much for this upload!!!!

[@AdventuresOfSeth]

Very helpful Thank you!

[@peter800]

Awesome man

[@jyothsnareddi9921]

very helpful..thank you so much.....

[@Doctor.Fortnite]

Q: 59-61 = -2 When we get 111110 as an answer then we invert and add 1 and get: 000010. Do we put a negative sign before " 000010" or is it not necessary? Like -000010 Please answer I have exam tomorrow ;-;

[@DannyPhantumm]

+Umer Naeem did you even watch the video, fool?

[@Benstyping]

And why is he saying 100 is negative zero? That's four... In binary can negative numbers also be a different positive numbers????

[@codebreakthrough]

Benami Ark the first number on the left (1) is the sign, meaning it has no impact on the size of the number but rather an impact on whether it is positive or negative if it is labeled as a signed number. 100 unsigned = 4

[@Michael-sq5ju]

Benami Ark While in binary 100 is 4, if you interpret the first digit as a sign bit and the other two bits as a number, 1 means the negative sign and 00 means the number 0, or negative 0 when you put it together. It's all about the way you interpret the numbers.

[@mohammedkhaled8622]

thanx caleb....you r wonderful....

[@codebreakthrough]

no, you're wonderful! haha

[@mohammedkhaled8622]

hahaha...

[@kawtheralateeq8264]

excellent job

[@dannyhunter5717]

Thank you for this also. The content of this video didn't go in quite as easily as the first however it may be more clear in the morning lol

[@codebreakthrough]

Watch series with autoplay: Introduction to Operating Systems Donations are greatly needed and appreciated! Click to donate: bit.ly/DonateCTVM2

[@muffinspuffinsEE]

If you already have studied this and want a recap of it this is the best video ever! :D No, distractions, no statments like: "this is hard, but I'll try to explain" and so on.

[@omergonfo4610]

excellent work and thnk u very much

[@tamang1234]

i love you caleb

[@hajeralmahri2404]

you are amazing!!!!!!!!!!!!!!!

[@calvin0630]

I'm watching this. I can't stop thinking about how you are Foggy Nelson from Daredevil

[@Z3kyTw0]

great video bro

[@adamdebesai]

Thank you :)

[@erinjarvis8089]

Gret video!

[@alikharal4480]

thanks for upload

[@sarahmanikam1546]

Thankyou

[@poppyrendall847]

This was so useful, I needed this before my exam which is tomorrow, thank you so much :3

[@elijahizere]

Poppy Rendall How did your exam go?

[@poppyrendall847]

Very good thank you :3

[@olivermitchell4968]

Poppy Rendall ohh shit! My exam is tomorrow!!!

[@ngalexngalex]

that's so great! =] u just save me from the mainland professor x_x

[@PerryCodes]

I, as well as many others no doubt, really appreciate what you are doing here. The one bit of constructive criticism I'd throw out there is I found myself getting quite bored with the presentation after about ten minutes or so. Perhaps you may want to work on ways to "spice things up" to keep those of us with the attention span of a gnat engaged! Cheers though - keep it up!

[@aiman_yt]

Ur right. It's too long

[@lprater11]

C'MON KAYLUB

[@pinkuuu29]

Why is -16 -> 110000?

[@codebreakthrough]

+Jaeee Kim farthest left 1 is a sign bit. meaning it is negative. The second farthest left 1 is in the 16s place. Giving the value 16.

[@deedewald1707]

@@codebreakthrough Correct you are a great teacher !

[@denninosyos]

Dann, that helped! Thanks! P.s. subbed!

[@is-ig4zh]

lefthanded xD

[@monsterjazzlicks]

So many damn contradictions in the video it's unreal! These render it unwatchable!

[@curiousmeer]

Thumbs up !

[@hotterthanpeppa]

Really*, good*...apologies...was typing quickly

[@Subtle-System]

omg, poor kid... Why use as examples the numbers positive 0 and negative 1? lol!!!! Such bad explanation... Why post this video? comical at least.