Boolean algebra #8: Truth tables - into expressions/statements

visit www.keleshev.com/ for structured list of tutorials on Boolean algebra and digital hardware design!

[@dumstzzile]

One of the best teaching tutorials in history. calm voice, simple english and strategically structured to make it as easy as possible. thank you sir. I learnt algebra for the first time and I promise i will easily pass any exam with your tutorials.

[@TheOriginalComments]

I am just learning boolean algebra at my local university. Our course-teacher is really bad at explaining fundamental concepts about boolean algebra. He just teaches us methods. Really glad to see that go beyond and explains the logic behind everything.

[@TRAI1LER]

thanks for investing your time in teaching this, many genereations will watch this as loong as it stays on youtube :)

[@bhakunlimited2993]

here in 2019 my man

[@mv8563]

@@bhakunlimited2993 2021 check😗

[@markosrnec5245]

@@mv8563 update :D

[@gustavo-hg8zo]

yess

[@_bholu]

Thank you for making such a great series

[@filipedgb]

Yes, you have 1* 0 * 0, that's why you get B' and C'.. remember that negating 0 is saying 1, in boolean algebra. So the point is , you want your function to give you 1 if you have 1 0 0 as input... How you do that? Simple, you just want to have those zeros negated on your expression, and you get A.B'.C' ... so you have A=1 , B=0 and C=0 but you negated both B and C so your expression will end up 1*1*1 resultind in 1, which was what you wanted... I'm sry that i'm just answering 8 months later

[@keleshevCOM]

@Holyfrik1 yes, I plan to do that - I plan to finish Karnaugh maps soon, then introduce to De Morgans theorem. However I don't know yet where to squeeze minterm-maxtern-canonical yet.

[@dannih93]

Thanks a lot for taking the time to make these videos!! They've helped me so much!

[@nabilelmaafi]

Спосибо вам болшой Mr Vladimir Keleshev. за такий хороший уроки.

[@oneplusonetwo]

Its starting to get vague at 2:50, if I want to create an expression that equals to 1, I can simply use A+B+C which equals to 1, or A+B(negated)+C, or AB+C(negated), or A+BC, or A(negated)B(negated)+C(negated), or many many other combinations, so the question is why you chose AB(negated)C(nageted). And you said screw zeros, but didn't explain why

[@shayanislam4840]

I know this reply might be too late to be of use to you, but for future readers scrolling through the comments: I think the expressions he uses are meant to obtain 1 for that line and that line only. He then adds those expressions to obtain an equation for the whole truth table.

[@JuanCuarenta27]

Thank You for uploading these videos ! they are a life saver !! :)

[@ilhamkabir1687]

you are awesome! i think i will be able to pass my exam now :)

[@robingadney4678]

Well this is getting me sorted out many thanks all the very best

[@sakariyesagadi1522]

Does it matter which order I put ABC in the table? And if it does how do i decide the order.

[@abdullah16747]

I am from KSA u r great thanks

[@LimpetteMe]

How does A.B'.C' = 1? surely its 1 * 0 * 0 - which is equal to 0. and not 1*1*1? I mean if A were a 1 then we write A, if A were 0 we write A' What has he done in this one?

[@cuddlebug8106]

Because he is looking at both B and C. You are a correct, a negative times a positive is a negative. When at least one of the values is a one then you get a one. Also you write the expression wrong it's A + -B.-C. That's A OR negative B and negative C. As we know A + -A.B would equal to A + B.

[@Holyfrik1]

will you have more boolean algebra like minterm maxterm demorgans theroem or canonical?

[@kdiscool27]

how do u explain this combination at 6:14 - 1 1 0 = 1, i could'n understand this....... please help..

[@fatahtani7886]

other question please : is it correct that ¬(A ∨ ¬B) should be made ¬A ∨ B then we carry on evaluation ? or for example if A is 1 an B is 1 it comes to not(1∨ 0) and then is: 1 or ¬1∨ 0 and is then 0 ∨ 0 then False '0' ?

[@bola5671]

Everyone talking about their exams they are about to take. Don't leave wanting minds hanging. We really are here wondering how your exams/tests went. Come back and tell us, lol

[@Potter_shines]

Thanks.

[@TRAI1LER]

Super duper mega trick :)

[@SeemaYadav-rf9qn]

Thank you vladamir

[@HectorQuijadaV]

This was helpful.