Digital Design 4: Grouping K-maps and simplified Boolean Expressions (correction @  

The sound of the cricket in the background helps me also to be more concentrated

4:56 B'D'

In your short 10 min video I understood this more then an entire semester from my professor thank you so much for this.

Best explaination video from like the 10 videos I've seen. You're the only one who precisely explains that you have to write the letters that are redondent in a line/column for the formula. Thank you.

Hi Your equation in this video 05:28 s Y=BC'+BD' is wrong answer The right answer is Y= BC'+B'D'

This has to be the best K-Map video i ever came across. Absolutely subarashi.

thank you very much sir, This has helped to fully understand this. My professor didn't explain to us how to do anything and just spoke as he wrote, you pointed out what you were specifically doing with each input, thank you for the clarity.

@kickersXY At time 2:30 in the video, in the group of 4 1s, A =0 in the first row and A=1 in the last row. Hence, A DOES change. Also, this is a 4 variable k-map so if you can create a group of 4, you will be left with only two variables in a grouping.

hello sir why isnt it B'D' + BC' for the third example

Thanks. The correction was made a year ago using RU-vid Annotations but realized Annotations are not visible on a Tablet or mobile device. I just added correction to the description.

Thank you very much for the correction!! What is the logic gate for Y=1? only a wire? i couldnt catch it..

At 5:28, why didn't you consider the first column as it is making a quad ?

You seriously saved my GPA! You are a fantastic educator! Thank you!

Thanks for the simple explanation for the 4 variable K-map, it really helped!

Perfect video to understand looping rules..

@psexor Thanks for finding the error. I have added a correction at that timestamp for the K-map.

Um. on examples at 04:21. i think should be ฺ lBlD+BlC ? please check again for me.

5:30 why didn't you include the vertical group?

i knew my teacher was bad, but this shows how bad he is. this stuff is simple..

Thank you VERY MUCH !! .. I have an exam this morning and this really helped ALOT :)

at 4:48 , B is also zero you wrote it 1 Means B .... plz correct me if i m wrong. I m preparing for exame

hi sr. do you have any 4 variables in k-map using java programming?..

the first 2 mins gave me all i need to know.. thanks!

In this expression. abc+aB+ABc+ABC+ABc Would it be suffisient to make A in an other thruth table for just A?. becaiue + it OR?

@ENGRTUTOR Oh you are correct, I did not notice that it was a group of 4 within the K-Map. I thought there was only two of them in a group. I have to be more careful next time. For some reason I did not see the other bottom row that were supposed to be in grouped with the top row in 2:30. Okay I understand it now, thanks heaps. Also, looking forward to your videos on SOP & POS canonical expressions, De Morgan's Theorem, and sketching logical input gates based on these expressions. ;-)

I get all of this so thank you for your help, however i have been given a question, and I'm not sure how to tackle it as output on the truth table is not given. The question says i need to 'Design a circuit that can be used to produce the parity bits data for the code in the truth table' however i am unsure how to do this, once i get the output i can do the rest! Please if anyone including yourself knows, help!! lol Cheers

Hello, does anyone know if it is incorrect to NOT group them using the continuous model he used? For example, if I just grouped the two 1's in the first row together, then the two 1's in the last row together and as well as the singular 1's in row 3 and row 4 by themselves. Would that be correct as well?

thank u sir. this helped me to understand how to group in a k-map

thank you very much! it's very useful

thanks a lot. your explanation was simple and on the point.

Hello, thank you but... I have a doubt: At 6:01 , the largest group should be the whole row. You took only two elements. *why* ? If you take the whole row you get: AB.

best explanation of k-maps on the internet. Thank you so much

at 7:00 can we not team up the upper right square with the down left? And by the way, thank you! Keep up the good work, you are a good teacher!

4:35 can this grouping applicable to 2 corner elements 3variable kmap

the description does say: "Example K-maps and simplified SOP expressions"

Smal leters : a= inverted A abc+aB+ABc+ABC+ABc Would it be suffisient to make A in an other thruth table for just A?. becacue + is OR

Did you studied the same your course syllabus is same as ours

Those crickets make me want to sleep :/

shukran

My heartiest thanks to you for making this video. Cool explanation.:)

I have a question. Is it also possible two apply K-Maps if we have lets say 3 input variables and 2 output variables in the truth table? For example, the S-R Latch truth table has 3 inputs and two outputs. If so, can you please do a demonstration on it. ;-)

This helped me so much wasent listening during lecture thank you so much!!

thanks guy, you are saving lives

Thanks very much for the video really simple and a great help !

I don't understand.. Anyone would give me explanation :(

very good tut. wasted 2 hour on text book....this is really good example..

great video, love the cricket noises

Thank you very much.

wo Awesome great job

THANK YOU!!!

This just saved my life. Thank you so much!

YOU'RE A LIFE SAVER!

in the k map at 4:55... why cant we pair the four 1s in the not C not D column?

Thank you, dude. I learned a lot from you. Cheers!

thanks this was very helpful for my upcoming test

At 2:30 - A also does not change. So shouldn't the expression be A'B'C ??? A very helpful tutorial, thanks heaps. Btw, could you also please make more tutorial videos on De Morgan's Theorem --> Sum of Product (SOP) and Product of Sum (POS) expressions? Would be really nice if you did. ;-)

cảm ơn. video rất hữu ích.

Thanks! ... This is a Big help!

Awesome tutorial. Without this, my exam would end up just like my picture. (Y)

how about a 5 variable k map?

late response, but that would involve creating a diagonal link, which isn't allowed.

You have earned my subscription :D

THANKS!!.. A big HELP!

thanks. it's really useful for me.

In 5:26 it should BC'+B'D'

قسم انك ابدعت

You just saved me from my exam tmr. Thanks * 10^100

good examples

Thank you sir❤

6:33 Can't you just do "((a xor b) and (c xnor d)) or ((a xnor b) and (c xor d))" instead of that entire expression? How would you even use xor or xnor in a k-map?

4:36,,,,i think that is not just B,,,its a complement B. Because B is 00...so it is a negation of B,,..,.,someone can correct me if im wrong????

thanks you so much for this video as it help me out so much.

I don't understand how you can group the four corners. it just complicates things

I saw your third video then the first 5 seconds of this video I thought I was on a different channel, you had an American accent

Thank you

Thank you!

Thank u sosooo much 😊😊😊😊

i can understand very well thank you... :)

thank you !

this vedio for minimum term or maximum terrm

thanks

Thanks from 2018

thanks a lot !!!

Thanks man, very appreciated lesson

thanx a lot....

حيا طلاب الجامعة العربية المفتوحة

??where is the place of later

Esta muy chida el vídeo,aunque tuvo un pequeño error, pero muy coherente gracias con este concepto entendi muy claro

i can hear the creepy night sound in the background...... :) Thanks alot anyway..!!!!

isn't B' at 4:40..B is zero

Thank you man

that video is awesome

thanks so much man

Greatttttttttttttt Thank's mate

thank you sir, very good examples :)

Thanks Man really helped !!!

it's helpful

3rd example is wrong

thx mate

Thanks :)