Logic Gate Expressions

[@Wrtvrxgvcf55]

by far the most underrated CS-related youtube channel. this video was nothing short of a masterpiece. keep it up!

[@ComputerScienceLessons]

Thanks for the kind comment.

[@Wrtvrxgvcf55]

cheers mate, it was well deserved

[@eidechsearts]

Thank you so much! I was struggling on understanding how to draw the diagrams!

[@ComputerScienceLessons]

I am very happy to help :)KD

[@belalcazr2010]

bless this video, simplified my EE class lecture in like 5 minutes!

[@samaramanavalan4037]

thank u! my exam is in 2 hours and this helped me a lot

[@ComputerScienceLessons]

I hope it went well. :)KD

[@samaramanavalan4037]

@@ComputerScienceLessons yes it did! ty!!

[@epharathapalo9617]

U made it so simple and its really understandable. thank you sir

[@mannyknowles]

Where is the "love" button?

[@ItsMangoTape]

S U B S C R I B E

[@Wawa-rp6ce]

THANK U, THIS VID HELPS ME TO UNDERSTAND THIS TOPIC

[@mohammadshareefshowandente8330]

i find many video and finally i got it what i want

[@ComputerScienceLessons]

Glad to help :)KD

[@habibamohamed-td3fz]

Omg . Thankyou very much 😍😍😍

[@anthonybrown4890]

amazing explination... this is very complex for someone with my style of learning, and you managed to explain it better than my college teacher who lilkely took me for an idiot because he didnt realise i dont learn like other people

[@ComputerScienceLessons]

Delighted to help Anthony. :)KD

[@Surpz]

the guy looks like he hasnt play minecraft

[@ComputerScienceLessons]

This guy's a big fan of bed wars :)KD

[@Surpz]

@@ComputerScienceLessons are you

[@Surpz]

@@ComputerScienceLessons if u want to play minecraft i will send you a server link to play

[@paulkta8635]

I aced it the whole computer paper.. Thank you for the 10 marks💪

[@dhanyav8265]

Your using 0 and 1 But in my school they are using TRUE AND FALSE So can u say the output of AND gate with true or false instead of using 0 and 1?

[@ComputerScienceLessons]

1 and 0, TRUE and FALSE, High and Low, On and Off, are possible alternatives. 1 and 0 is most common because it ties in with binary. If you study this at a more advanced level, 1 and 0 makes more sense.

[@lunarscapes6016]

Who else from n00b_asaurus

[@veryangerymanminecraftisco9048]

same

[@James.D.B.]

Sup

[@JiJi-ji9je]

this is just so helpful, I'm glad to find your videoo, helps me with homework 💙💙💙

[@ComputerScienceLessons]

Glad to help. :)KD

[@MREditor-jy6ww]

Thanks!

[@874328789]

i wish you were my teacher :(( thank you so much

[@S3DOLI]

thaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaank yoooooooooooooooooooooooooooooooooooooooooooooooooooou

[@ComputerScienceLessons]

You are very very very very very very very very very welcome :)KD

[@grayskies6630]

I am so enjoying this series of videos. I can't thank you enough for these! Sending love and thanks from South Africa

[@ComputerScienceLessons]

I love comments like yours. Thank you :)KD

[@chaitanya-jc5do]

this video made me pass my exams I'm really grateful for it. keep it up!

[@ComputerScienceLessons]

I'm delighted to be of service :)KD

[@tinevimbomudavanhu9307]

wow this is really stupendious...l really understand now

[@ComputerScienceLessons]

Glad to help. :)KD

[@aaronaustrie]

Hopefully, this tutorial will help me complete my HW assignment

[@asish4693]

Who's From GPS... Comment!!

[@luhohnel]

Always lost 10 marks because of logic gates, now I finally understand.

[@rezakamel1918]

thanks man for this video. there is 8 valid expressions in 06:20 not 4

[@ComputerScienceLessons]

Indeed :)KD

[@EXCELLENCYSAMEDIA]

Very good tutorial

[@ComputerScienceLessons]

Thank you :)KD

[@inarisound]

tbh.... I need to download all of your videos because I'm afraid if something will happen to such treasure. I aid my self-study with your videos and it makes such a wonderful impact/experience, huge thank you! I really feel like you love what you are doing, and that shows in a way how you explain things... You are the third person on youtube that really knows what he is talking about, and I've seen so many.

[@ComputerScienceLessons]

You are very kind. :)KD

[@giuliadiriso5205]

Ist it also right if i would write b and (not a) instead of (not a) and b

[@ComputerScienceLessons]

Yes it is. This is known as the commutative law of Boolean algebra. However, not(a and b) is something different. Furthermore not(b and a) is the same as not(a and b) :)KD

[@paulkta8635]

U=Legend

[@fortnitefreellama]

Very Helpful for Revision! Subscribed! God Bless :)

[@ComputerScienceLessons]

Thank you :)KD

[@youssefgamer7443]

thank you so much

[@ComputerScienceLessons]

You're welcome :)KD

[@Mandroid45]

This channel is so amazing thank you so much for this!

[@ComputerScienceLessons]

You are very welcome :)KD

[@py_yogesh_1435]

It's a clear explanation thank u. Can u solve some boolean identity to draw the circuit😊

[@ComputerScienceLessons]

Thanks for the comment. If you're interested, I have made a sequence of videos on Boolean algebra. :) KD

[@py_yogesh_1435]

@@ComputerScienceLessons where can i Look on to it? Do u send its name or web link please

[@ys1r]

Thank you

[@ComputerScienceLessons]

You are welcome :)KD

[@foujammaf238]

U are adorable !

[@imho2278]

It's 2 different kinds of transistors inside that shunt the power in different directions.

[@russkiy_3]

This is such a great video. I finally understand Logic Gates ! Many thanks !

[@stryychnine]

thank you so much, very good!

[@ComputerScienceLessons]

You're very welcome :)KD

[@renamiyama1063]

thank you so much man this will help me in my topical test today. The video is so simple and easy to understand

[@ComputerScienceLessons]

I hope the test went well :)KD

[@Vyantri]

I feel like I've heard this voice before on History and Discovery channel

[@ComputerScienceLessons]

That wasn't me. Put perhaps one day I'll be discovered (or else I'll be history) :)KD

[@cactusgamerz_cgz]

W video

[@raghavendras4969]

U r just a v good explainer Can I get truth table of xor and xnor

[@James.D.B.]

I always thought it was pronounced "Boo-lean" not "Bool-ean", the more you know

[@ComputerScienceLessons]

Named after the great George Boole :)KD

[@tahmidchowdhury4972]

what about Z = A + B + C +D WHAT WOULD BE THE CIRCUIT

[@ComputerScienceLessons]

This is a 4 input OR gate. To build one, take the outputs of two different OR gates and feed them into a third OR gate. :)KD

[@tahmidchowdhury4972]

@@ComputerScienceLessons Thank you so much. very helpful :)

[@kandekore]

This video is awesome. Thank you

[@ComputerScienceLessons]

You are most welcome :)KD

[@wilfrieddake6128]

thank you. So helpful

[@sigmaguru-c8i]

Sir, is it same as current syllabus? Btw I love how simplified you that much complex topic such a gem channel.

[@ComputerScienceLessons]

You are welcome. The UK exam board OCR use the same symbol convention I have used. This may vary depending in the exam board. :)KD

[@duality4y]

you can build a Or with And and Not gates and vice versa And with Not and Or Gates. Which I find absolutely amazing.

[@ComputerScienceLessons]

What amazes me is that George Boole worked all of this out in the 19th century, based in the work of Aristotle from about 350 BC. :)KD

[@sigmaguru-c8i]

Sir, is it same as current syllabus? Btw I love how simplified you that much complex topic such a gem channel.

[@ComputerScienceLessons]

The fundamental concepts have not changed since the 1950's. Some people use different symbols for the logical operations. I have used ^ for AND, v for NOT and ¬ for NOT because you can find them all on a keyboard. The fundamental concepts are universal, regardless of the syllabus you follow :)KD

[@pmanolak]

That's the way all tutorials should be made. Clear and fluent language, without breaks, all words fully understood and the fluent of speaking at the correct speed. None pauses, coughs or mistakes. Enough with all tutorials and courses, plenty of them highly paid, that we need a translator or subs in order to understand most of the words. Golden rule? If you cannot speak correct and understood English, prefer to make videos only to the mother tongue.

[@ComputerScienceLessons]

Thank you :)KD

[@kylebeechey9090]

A- 1 B- 1 pass through OR gate result 0 pass through NOT gate making Z- 1, am I missing something or is Z, A or B

[@kylebeechey9090]

Nevermind, precedence answered my question

[@faridgulum1226]

thank you so much for every thing. This helps me A LOT : )

[@ComputerScienceLessons]

You're welcome :)KD

[@jardinrecto]

wow! very nice explanation!

[@thanukamax1374]

This helped me alot i coulnt understand anything in school u r like a angle

[@ramdanyvanistha2844]

An*

[@TheeSlickShady_Dave_K]

Excellent video 🏆 Easy to follow and I get it now! Thank you thank you

[@ComputerScienceLessons]

You are most welcome. Delighted to help :)KD

[@muhammadnouman6817]

Thank you so much sir🤗this helped me a lot.....

[@ComputerScienceLessons]

You are very welcome :)KD

[@m.e.l.t3771]

i hav an exam tmr ad was so nervous about this topic but this really helped tysm!

[@ComputerScienceLessons]

Delighted to help. Good luck :)KD

[@KD-xl7en]

You know the XOR gate is it just the OR gate but instead when it’s input is 1 1 the output is 0

[@husnainshahid9181]

great explanation easily understood

[@ComputerScienceLessons]

You're welcome :)KD

[@BenardOnchieku-ny5qc]

Also am requesting for clapping icons

[@primsiren1360]

Thank you so much. There is virtually no cs content on youtube for gcse, especially on vb, but feel much more confident knowing about this channel.

[@imho2278]

Jim Pytel is a great help.

[@sandaliumeja1691]

Thankyou soo much ♥️

[@ComputerScienceLessons]

And thank you - You are most welcome :)KD

[@borokinniyetunde2946]

Thank you for this

[@ComputerScienceLessons]

You're welcome :)KD

[@chikwizoeddlee]

thank you so much this video helped me a lot ...

[@dead_protagonist]

explained so much better than my teacher

[@mubeenhussain8753]

Excellent Explanation.

[@piocko_clips6182]

Logic gates are easy

[@ComputerScienceLessons]

I agree :)KD

[@josephjoe2756]

You are the best!!!

[@ComputerScienceLessons]

Thank you so much :)KD

[@piocko_clips6182]

I learnt in 5 mins

[@ComputerScienceLessons]

Excellent :)KD

[@dude_mude3366]

THAAAAAAAAAAAAAAAAAAAAAAAAANK U

[@ComputerScienceLessons]

U R very very very very very welcome :)KD

[@promitchaudhuri9785]

thanks a lot. You made it hell lot of easier for me..

[@ComputerScienceLessons]

I'm delighted to help. :)KD

[@jacobthompson2794]

Thank you Sir, superb video.

[@ComputerScienceLessons]

You are very welcome :)KD

[@GenuineGGs]

Amazing video tysm!

[@ComputerScienceLessons]

You're most welcome :)KD

[@Ice-mapMap-pw6zx]

In 10:44 I think you made a mistake sir or I don’t get it ..anayway it’s not possible if A and B is on how can B at same time not be on. Cause the second and gate needs an input Thanks

[@ComputerScienceLessons]

The value at B goes in two directions. If input B is a 1, then a 1 goes into the top AND gate, and a 1 goes into the NOT gate. The NOT gate changes the 1 into 0 which is fed into the second AND gate. :)KD

[@siddharthmundra1895]

bruv you explained in 6 mins what I couldn't understand for a week man tysm!

[@anne_marie_6508]

Thank you 🙏🏾

[@ComputerScienceLessons]

You are most welcome :)KD

[@lutherblissett7873]

Thank you for all the effort and knowledge.

[@BradCozine]

"Zed's dead, baby. Zed's dead."

[@aaronaustrie]

Good explanation bro 👍🏽👌🏽

[@ComputerScienceLessons]

Tnx :)KD

[@tinevimbomudavanhu9307]

thank you so much,this is on point keep up the good work

[@ComputerScienceLessons]

You're welcome. And thanks for commenting :)KD

[@kennethmwenda7130]

Very useful,keep it up

[@abzam7879]

🐐 teacher

[@ComputerScienceLessons]

Thanks :)KD

[@innocentnkabinde6789]

Wow man you are the best amongst the rest ,believe me .

[@ComputerScienceLessons]

:)

[@debarshisen9702]

amazing, keep posting more videos

[@ComputerScienceLessons]

I will indeed :)KD

[@lovenature812]

Greatly helped!!

[@gmckenna9108]

Super🙏

[@ComputerScienceLessons]

Thank you :)KD

[@minchotanev4416]

thanks, u r saving me, my exam is tomorrow and this helped me a lot

[@prathameshshinde8101]

this vid is so cool thank you made my computer science exam 10x times easier :) ty

[@mohammedk.h.f3016]

Thanx

[@ComputerScienceLessons]

You're welcome :)KD

[@jjoezzerekoroma5320]

Wow amazing sir Thanks

[@wildjimmy7]

Please correct me if I'm wrong, but the logic circuit you drew from the Boolean expression Z=(A and B) and NOT B is incorrect. If B is high than the circuit will not have an output due to the NOT gate feeding the second AND gate. If B is low than the first gate will not have an output, which will cause the second gate to again have no output. B can not be high and low at the same time in an AND gate configuration.

[@ComputerScienceLessons]

Hi James. The logic gate diagram does indeed match the expression (the object of the exercise), but as you have quite correctly pointed out, the circuit is pretty much useless. Examination of the truth table reveals that the value of Z is always 0, which means the whole thing could replaced with a single wire carrying no voltage at all. A B NOT B Z 0 0 1 0 0 1 0 0 1 0 1 0 1 1 0 0 If you are interested, my videos on Karnaugh maps and Boolean algebra cover techniques for simplifying expressions and therefore the circuits they represent.

[@HenryFanboy]

I can revise my module in 1 day with all these videos if I put my self to it. That's how well made they have been so far for me. I would donate £5 if I pass. I left all my revision for last day and if this makes me pass..............

[@alaintristanlado4001]

what would be the input if 2 end gate connected together to not gate?

[@ComputerScienceLessons]

Not sure what you mean?

[@rudoe2nd777]

you made it so much easier for me!! thank you so much!!!

[@ComputerScienceLessons]

You are very welcome. Glad to help :)KD

[@m.m.3185]

Can you please tell me the license of the video. I used the filter-option "Creative Commons" but the license is not displayed in the video description. Thank you in advance!

[@AshaOmar-ti1tg]

Much love ❤ very helpful

[@latedeveloper7836]

Very helpful 👍🏻👍🏻

[@ComputerScienceLessons]

:)KD

[@algyosmanjr.7829]

Thanks I won't fail

[@raghavendras4969]

Me too

[@callmegiorgioorsmth5004]

Thank you so much man, helped a lot!

[@ComputerScienceLessons]

You are most welcome :)KD

[@okaforvincent2461]

Helpful in 2024❤

[@destined0645]

The not(A or B) could you write it as (A or B) not , is it the same thing? And does it matter ?

[@ComputerScienceLessons]

You logic makes sense to me, but it's a matter of convention. The NOT should really come first. However, NOT(A OR B) is equivalent to NOT(B OR A) For the purposes of an exam, you should stick with convention. When you get into Boolean algebra, following conventions becomes even more important. :)KD

[@destined0645]

@@ComputerScienceLessons thank you