The "check-board" pattern can be simplified as follows: AB'C' + A'B'C + ABC + A'BC' = C'(A xor B) + C(A xnor B) = C' (A xor B) + C (A xor B)' = A xor B xor C. [ A xnor B = (A xor B)']
In much the same way of the Full Adder using two Half Adders, you can realize a Full Subtractor using two Half Subtractors. Using a K-map, you can deduce the equation B0 = /A*B + /(A_xor_B)*C, and D = A_xor_B_xor_C. The wiring of the Full Subtractor is the same as that of the Full Adder.
Easy to learn the concept in minutes....I found it helpful by playing it in speed of 1.5x 😁.....just to have a quick recap try it....u may even try to 2x but I think u need to have degree for it🙄😝
Thank youu soo much for this playlist😊 I was able to complete my syllabus just because of you✨ Very easy and to the point explanation of each topic😊 You're the best Keep it up!!!!
Can you explain the Borrow In concept? Is it a fixed value on the table that exist only to guide you to build the circuit diagram? I mean where do we get that value without the truth table?
@@sameersk9295 instead of taking a pair in K-Map, take the leftmost two ones as separate. And then, derive the expression(you'll need to reduce it). You'll get it.
@@nameisnoxd @nameisnoxd I was watching the video trying to understand the concept and read your comment, it confused me and I wanted to know what was missing from the video. If you recall what is missing let me know 😂 because I want to understand the concept of full subtractor😂.
Thank you very much for your clear and exhaustive explanations. You've got a so wonderful handwriting, I would be really gateful if you tell me the softaware you use for such a presentation.
if i connect a half subtractor using difference as 1 input and 4th input as the other one,will it act as a 4 bit subtractor giving me difference and borrow???
Explained 6 years ago but still appreciated and better than our college teacher
Don't compare man
U may be not listened to u r
College lectures 😀
Right💯
@@gkramanaidu5312 the type of teacher we had for this always jut repeated the what's written in book and for practical they asked another teacher 😂😂
@@aryanyadav6263 which collage you are studying
@@gkramanaidu5312 I am doing diploma in prp clg
For my reference : C is the borrow given to the prev bit and Bo is the borrow asked by the curr bit from the next bit.
Thank u for clarifying. I was confused before
It's real bro@@madugulajoshi5050
The "check-board" pattern can be simplified as follows:
AB'C' + A'B'C + ABC + A'BC' = C'(A xor B) + C(A xnor B) = C' (A xor B) + C (A xor B)' = A xor B xor C. [ A xnor B = (A xor B)']
Watching in 2024❤❤
Same here
Explained 9 years ago but still the goat explained better than my highly paid university teacher
I was getting very confused while looking the same table in my book. but your lecture saved me thank you sir
Thank you sir for all the contribution in the Education system we the future of this country need teacher like you❤
Explained 12 years ago but still appreciated and better than our college teacher
like like like......hehe
Thank u so much sir ur way of explanation is amazing i understand all concepts very clearly...😊
Crystal clear. Thanks for the upload.
People's said that "old is gold" by watching your video I feel like they are correct
Your are explaining better than our teachers
OMG that XOR thing finally made my life easy when you can't group anything in K-MAP. Great video Mate!
can't agree more 💯❤️
also, on a completely unrelated note, I hate logic gates *completely*
@@the_mohan lmao
10 years ago is wild
Very clear and straight to the point! Thank you! You also have very precise handwriting!
neso please check this video it is not complete
actually
wanted to see the next part
Yeah actually , circuit diagram is not provided
borrow output of full subtractor is incomplete
where is the logic diagram?
You can do a substractor by using full adder, inverting B and adding 1 to the operation.
so basically 2's complement is being used, yeah?
thank you very much for this, I'm from Saudi Arabia and your lecture helped me out, thanks 😘
Rich ⛽
@@shivankitss8396 out of context but yes, very rich
@@shivankitss8396 yes very rich
@@akshatjain8995 indeed
In much the same way of the Full Adder using two Half Adders, you can realize a Full Subtractor using two Half Subtractors. Using a K-map, you can deduce the equation B0 = /A*B + /(A_xor_B)*C, and D = A_xor_B_xor_C. The wiring of the Full Subtractor is the same as that of the Full Adder.
Also for those interested, C is called B_in in some texts
Why do we use subtractor circuits when we can achieve the same using compliments (by addition)?? Please help.
This video is 9 years old .....but now it helped me a lot❤
Explained 9 years but also better than our teachers thank u sir❤❤❤
It's 9 years but it looks like today's class..... thank you.
You are best teacher for COA thank u save lot of future engineers❤❤
Explained 9 years ago but still better than college 😮
Explained 10 years ago but still it is better ❤
Best Channel Ever . Please Carry on with your work and add more subjects like C++ . Love Your Channel...
This is really so helpful thank you sir
It is most relevant after long 9 year
Thank you very much for helping me understand this concept
Easy to learn the concept in minutes....I found it helpful by playing it in speed of 1.5x 😁.....just to have a quick recap try it....u may even try to 2x but I think u need to have degree for it🙄😝
I watch every video anywhere in 2x. My mind is trained to watch 2x videos
@@udaywahi wow even i tried but i found it bit difficult to follow him
@@udaywahi haha im on my way there ... im "trained" at 1.5x and sometimes 1.75x
@@SreenikethanI is it that hard to conceive everything by watching at 2x
last me kya karna tha ? like joo borrow aayega full adder ka uski equation itni hi banegi ya further simply kar sakte hai ?
Amazing Explanation 🔥
Explained 9 years ago but still better then our class teacher
I am watching this video after 9 year great exapltion sir ❤
Thank youu soo much for this playlist😊
I was able to complete my syllabus just because of you✨
Very easy and to the point explanation of each topic😊
You're the best
Keep it up!!!!
This lecture is really very helpfull. Thank you very much for uploading your video.
Can you explain the Borrow In concept? Is it a fixed value on the table that exist only to guide you to build the circuit diagram?
I mean where do we get that value without the truth table?
Thanks alot buddy now i can give my viva with peace
A big thanks man! it really helped me a lot .
Tq bro❤
video is incomplete!!!!!! PLEASE CHECK IT !!!!!
you can do the rest of the part on your own
@@sivaganesh4489 We are not as smart as you...
😮
i'm student of bscs and your topics are very helpfull to me, thanks sir
nenu adagaledu kada
its in complete plz complete it
NESO ACADEMY THE VIDEO IS INCOMPLETE
We are lucky to see your video ❤❤
hi sir, does the lecture stop at 7:41. I did get to see the circuit diagram.
exactly. the video gets cut abruptly.
for those who want rest of them::
Bi=(AxorB)'.C+A'.B
strayon bruh can u explain it
@@sameersk9295 instead of taking a pair in K-Map, take the leftmost two ones as separate. And then, derive the expression(you'll need to reduce it). You'll get it.
@@rahulkhatri1748 even i commented it like 1 yr ago😂😂 thnx fr ur rply i dont even remember what i asked
@@sameersk9295 ahahahahah, i saw that, let other people know still :))
borrow= bc+ba'+ca' or a'b'c+a'bc'+a'bc+abc
Thanks sir It helps me to Get mAX. marks in my examination.............. Thanks
8 years completed...
Full subtractor but half 😂
ma full smjhna aya tha,ider a kr pta chala half subtractor be hota ha 😭😭
Pura dikhaya hi nahi
What are you saying can you elaborate please.
I don't remember why posted this comment maybe due to half explanation on the video or something. It's been 10 months now 😂@@QazWsx-sn3bn
@@nameisnoxd @nameisnoxd I was watching the video trying to understand the concept and read your comment, it confused me and I wanted to know what was missing from the video.
If you recall what is missing let me know 😂 because I want to understand the concept of full subtractor😂.
very nice lecture and easy to understand ...............
Thank you for this simple explanation :)
Thanks to clarify my doubts
vidoe super sir❤
here 9 years ago, still nice vid
Guys the truth table output for the Difference is '69' in BCD.
Nice.
lol
I LOVE YOU NESO ACADEMY
5:21 Important concept ****
thanks man... ur videos r helping me a lot...
Thank u so much It seemed very difficult but now it's very simple
very nice explanation
awesome!!!!......u have cleared my concept!!!!...... keep making such tutorials!!!
The video is complete enough guys... all that is missing is the circuits which are similar to the ones in the Full Adder video.
very helpful bro😇😇😇
Nice explanation of concept
Still gold in 2021
thank you so much! your vids help me lot
I am grateful
nice video!! but I think there is an error: c is a borrow from previous stage.
welcome!
Helpful n easy explanation tq sir
Is it also possible to write the borrow as b=Bar(A)B+Bar(AxorB)*(Bin)
+Neso Academy
b=A'B+(A xor B)'.C
Thank you very much for your clear and exhaustive explanations. You've got a so wonderful handwriting, I would be really gateful if you tell me the softaware you use for such a presentation.
camtasia
What is the ans in borrow if we take only 1 pair of 1's and other two remain alone as your previous lec full adder?
Is the ans is A'B+C(A' XOR B)
Yes
Bo = BC + A̅(B⊕C)
= BC + A̅(Bc̅+B̅c)
= BC + A̅Bc̅ + A̅B̅c
= B(C + A̅c̅) + A̅B̅c
= B(C + A̅) + A̅B̅c
= BC + A̅B + A̅B̅c
= BC + A̅(B + B̅c)
= BC + A̅(B + c)
Well explained.. Thank You sir.
THE REAL FUN STARTS WHEN YOU SEE THIS VIDEO AT SPEED =0.5 !!! MUST TRY xD !!!
you must be high xD
LOL
SoMiL ShAh se it on speed 1.5
shit! yeah xDD!!
i watch all of his videos in 1.5 :D
amazing!
thankyou
Hkgtkjh
Nice explanation
join the two half subtract with or gate you will get the logic diagram
+
NOOOOOOOOOOOOOO ITS NOT COMPLETE
perfect explanation😇
i really appreciate this,thank you
I am not interested in English lecture but here i am learning in english because i am understand whole concepts in 2024 ❤😂
very good sir..
Can we write the borrow as Bin(A xnor B) + A'B ?
Edit : Yes we can.
Cin(A xnor B) right?
So why did you start subtracting 1 from 0s and give D and B0 values, how?
because thats the point of full subtractor
thank u so much! It helped me alot .
if i connect a half subtractor using difference as 1 input and 4th input as the other one,will it act as a 4 bit subtractor giving me difference and borrow???
Thank you so much for this video. My professor's explanation was so confusing. But this helped me understand better.
Thank you sir !!
Explain 8years ago but still the best🥲
Thanks for that wonderful explanation. :)
Plz make videos on logic families
Excellent thank u sir
there is one problm in borrow output k-map table ->0 0 0 1 , problm
thanxxx for nice lecture
but last carry k map is incomplete sir please extend this video
I have a doubt. From where we are getting borrow... Like from which number??
Explained 13 years ago but still appreciated and better than our college teacher
Thank you sir🙂
if the subtraction is in binary how come you are subtracting (2-1 ) to get one which is true for decimal system ?
please clear my doubt
When you borrow it becomes 10 (which is 2 in decimal system)
you are very good thanks alot
thank you very much :)....its crystal clear