Half Subtractor and Full Subtractor Explained

In this video, the Half Subtractor and Full Subtractor are explained in detail.
By watching this video, you will learn what is half and full subtractors and how to implement a full subtractor using half subtractors.
Timestamps:
0:00 Half Subtractor
3:34 Full Subtractor
11:11 Full Subtractor using Half Subtractors
What is Half Subtractor?
It is the combinational circuit that performs the subtraction of two input bits and generates the difference and borrow bits as an output.
The logic circuit of the Half subtractor consists of one two-input XOR gate (Difference output) and, one AND gate and NOT gate (Borrow Output).
The Boolean expression of Difference and Borrow output of Half Subtractor:
D = A (XOR) B (The difference output)
B = A'B. (The borrow output)
The half-subtractor circuit can perform the subtraction of two one-bit numbers without any borrow input. It is suitable for the subtraction of the two one-bit numbers at the LSB positions.
Full Subtractor:
The Full-subtractor is the combinational circuit that performs the subtraction of two input bits and the incoming borrow bit and generates the difference and the borrow bits as an output.
The Boolean expression of Difference and Borrow output of Full Subtractor:
D = A (XOR) B (XOR) Bin
Bout = A'B + Bin [ A (XOR) B ] '
The Full Subtractor circuit can be implemented using the two Half Subtractors and one OR gate. In this video, the design of Full Subtractors using Half Subtractors is also explained.
Digital Electronics (Playlist):
• Digital Electronics
This video will be helpful to all the students of science and engineering in understanding the Half Subtractor and Full Subtractor Circuits, and how to design a Full Subtractor using Half Subtractors.
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[@ALLABOUTELECTRONICS]

Timestamps:
0:00 Half Subtractor
3:34 Full Subtractor
11:11 Full Subtractor using Half Subtractors
For more videos on Digital Electronics, check this playlist:
ruclips.net/p/PLwjK_iyK4LLBC_so3odA64E2MLgIRKafl

[@poojashah6183]

Best video on half and full substractor👌🏻👌🏻

[@mayurshah9131]

Nice narration as usual

[@hola_channel]

Can you say if that question like how an X-OR gate can be used to complement a single bit for this does we want to use half subtractor as an answer?

[@MCTVARG]

Thanks for your videos.

[@shaikmehekfatima9399]

It was a great explanation!!!!!!!!!Thank you

[@Clenner0]

Thank God bro you saved my life without my brain exploding.

[@sharmakhushi24]

Your explanation is amazing ☺️😊

[@tymion2470]

Thanks you dude! Thank to your channel I probably will be able to build my simple calculator in the Minecraft :D

[@ujjalpoudel9275]

Legend watching one day before exam

[@watchforfree-hq9sh]

Ultra legends watching 20 minutes before exam

[@watchforfree-hq9sh]

Legends watching 20 minutes before exam 😢

[@abhaykewate__]

Bhai konse collage me may ke mahine me exam hote hai

[@AstervoidHestray]

Hello, I would like to ask something regarding the full-subtractor. In the video, you are using the format in which we are looking for the combinations of A, B and Bin such that Bout = 1, which results in the formula you have written and worked on in the video. When I follow your video and try to use Karnaugh, I end up with a AB/Bin table in which I have the values as [0, 1, 0, 0; 1, 1, 1, 0] and the resulting Karnaugh is Bout = (~A) * Bin + B * Bin + (~A) * B. I understand both logics, but then why is it that the functions for Bout are so different? Besides this point, thank you for the video and explanations. Your work is much appreciated!

[@wasi170]

same doubt his equation has mistake ig

[@sweet_ue]

Thank you. I was looking to extract an equation B And summarize it and understand it 😍

[@ravadadurgaprasad5951]

Nice explanation sir❤❤❤

[@ninaplevnik6116]

LIFE SAVER!!

[@Raj-yi1ud]

13:31 Thanks sir for making the video

[@anmolsoni6652]

thank sir i have more doubt than before

[@archivvithlani6610]

lmaooo

[@sharmakhushi24]

Thknu so much ❤️

[@ChanduPuchakayala]

Excellent explanation sir ❤

[@saiamudala4996]

Super sir

[@AnkitSingh-ru8he]

Thanks bro

[@anushka.narsima]

7:09 how did the bracket turn into xor' ? Is that a formula or smthn?

[@ALLABOUTELECTRONICS]

Yes, A⊕B = A'B + AB'. Accordingly, the term in the bracket has been replaced with XOR.

[@NoorhanMohammed-jx2jg]

How can I using 3 half adder design full adder

[@august7791]

2:52 what is meant by LSB? May I know.

[@ALLABOUTELECTRONICS]

LSB stands for Least Significant Bit. (The right most bit in the binary number which has least weightage in terms of the power of 2s)

[@august7791]

@@ALLABOUTELECTRONICS Thank you very much.

[@ashik67988]

18:11 sir why did you took the 2 middle expreesion to see common,other than that you can also take first 2 also no sir?

[@ALLABOUTELECTRONICS]

Yes at 8:11, you can do so. But I wanted to get this specific expression. And wanted to show that, how full subtractor can be designed using two half subtractor.

[@hola_channel]

4:59 you have said 1-0=1 which is difference and then 1-0=1 which is for borrow out but you have put 1 for D and 0 for Bout it should come 11 for 1 0 0 input right?

[@ALLABOUTELECTRONICS]

1-0 is also a difference. (But without Borrow). We are not borrowing anything to get this difference. At 4:09, as you can see, we have taken borrow.

[@hola_channel]

@@ALLABOUTELECTRONICS thank you for your explain

[@hola_channel]

Can you say if that question like how an X-OR gate can be used to complement a single bit for this does we want to use half subtractor as an answer?

[@053_eshan9]

Sir are you NESO ACADEMY? BECAUSE YOUR VOICE MATCHES A LOT

[@aryandhande]

💀

[@balraj25997]

@@aryandhande 😂😂😂😂

[@setegntayto869]

where is the borrower for 0-1

[@rashmimishra187]

Is full subtractor using a half subtractor is known as parallel subtractor????

[@ALLABOUTELECTRONICS]

No, actually in the parallel subtractor, the output of the one subtractor block is connected to the next stage. (similar to the ripple carry adder) If you want to know more about parallel adder / subtractor, then you can refer this video.
ruclips.net/video/J7gPUP0aRug/видео.htmlsi=UEMfBzDt1eouQpIY

[@rashmimishra187]

@@ALLABOUTELECTRONICS thanks 😊 🙏

[@muhammadraafay]

noice

[@antoniocorreia8591]

Dont understand at 9:04 the "as we've seen" and then D= A XOR B XOR Bin

[@ALLABOUTELECTRONICS]

It is the expression of Different output. It was derived from 6:14 onwards.

[@user-ib6ip5ef1e]

Everything is okai but sir your explanation lines hides the diagrams and all plz fix it to small size or make ur diagrams and all on upper side and downside leave for that explanation lines

[@ALLABOUTELECTRONICS]

You can turn off the subtitles in the video settings. On the desktop, you can also drag them anywhere on the screen as per your convenience.

[@user-ib6ip5ef1e]

Thanks for guiding ❤

[@fasty93]

I am too stupid to understand this, like for example I have no idea what that O shaped thing with the + in the middle is.

[@ALLABOUTELECTRONICS]

That represents the XOR operation.

[@fasty93]

Thanks@@ALLABOUTELECTRONICS

[@koollapoojitha8194]

Please remove that words scrolling down....

[@ALLABOUTELECTRONICS]

You can trun off the closed captions (CC) in the video settings. On the desktop, you can drag them anywhere on the screen.

[@bazidpurboy5560]

Hindi ya Punjabi meain bola kro sir

[@pratapsinghpawar857]

this guy is too confusing !!!!!!!!!!!!!!!!!!

[@Yamanop2005]

Agree he is not for Beginners

[@prineetsridhar4926]

Bro fax fr my gf said the same thing

[@iwillshinelikesun]

Bhai padhle thoda

[@korubilligaming]

Yes