2-Bit Multiplier Using Half Adders

[@azizalaliq8]

Thank you so much for making these. I really hated Digital electronics when my lecturer was explaining things and i always dreaded that class. Thanks to you, i can actually see the beauty in implementing these systems while understanding at the same time.

[@DrKTechSpecialist]

how we know that we have to draw first 4 add gates ?

[@sivareddy414]

@@DrKTechSpecialist 2×2 multiplxer

[@user-in4sg1nt4t]

thnku neso...i will pay u back the day i get success...!thnxx

[@vt2443]

ahem.... so what happened

[@vt2443]

@Kraken sadge indeed

[@freedomsebastian2546]

🙏

[@HEROHEMU]

​@@freedomsebastian2546by this time he had completed graduation may. Bee...

[@magnumbgmi9477]

Milli kya??

[@mysticondeflamme]

Thank you so much for explaining the concept so beautifully. Helped me a lot

[@DrKTechSpecialist]

how we know that we have to draw first 4 add gates ?

[@oggy107]

@@DrKTechSpecialist A0B0 is A0 and B0

[@mohanseditz]

It's OK

[@philosophicalninjagenericl3793]

You have my thanks. I had no idea where to even begin with Multipliers, then this video solved my problem.

[@ghita2003able]

amazing explanation . You save us right before exams . THANK YOU !

[@barsilgen120]

Thanks for your effort, we all very appreciate it

[@santhoshm7584]

1:08. I heard it as the stupid multiplier instead of 2 bit multiplier.

[@momentswithjireh3921]

Thank you so much, your explanations are fantanstic!

[@Tact5115]

Bro, u r lifesaver! Thank you so much

[@aahyoushhh]

you are a life saver. love from nirma university❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

[@hs8493]

great explanation!!

[@agx111]

7:19 Shouldn't this be OR gate because C1 is addition result of a1b0 and a0b1

[@shubham6523]

no!! because C=X.Y and here x = A0B1, Y = A1B0

[@sauravsinghsuryavanshi2344]

Awesome, thanks for posting ! god bless u pls upload network analysis lecture .... thanks .. #RESPECT

[@achaudhary5290]

Can you please upload a sequential 4 by 4 bit multiplier

[@talhaanwar4959]

we are waiting

[@TOPGSN]

Thank you Sir 🙏

[@TheRojo387]

Most modern computers don't even have multiplier circuits, but use a lookup table (on the CPU) to perform the operation.

[@dheerajswaroopsm691]

Nice explanation. Please do 3x3 multiplier.

[@soundous47764]

Thank you very much Professor, you help me

[@awaisumar5125]

you have described all the basic components for ALU..but Divider is still missing please try to make video of divider too. and also a video of 4bit multiplier.it would really help me in design of ALU

[@SaadAli-sz8hf]

Beautifully Explained !. Thank You. :D

[@abizerbadwaniwala1684]

Why not using OR gate instead of XOR ??? Reply plz.....

[@kaveeshaweerakoon7032]

why use xor ??? its will be only OR ,when use xor output is going to A1B0+B0A1

[@30ashishchotani81]

@@kaveeshaweerakoon7032 you want to perform arithematic addition not logical addition, for arithematic addition u have to use an adder which has the sum give by XOR(A,B)

[@sushmitanigam4979]

superb.. thanku so much

[@lobsterfork]

Great video!

[@vishnuvardhan5605]

7:33 P2 is A1B1+ C1 but you have drawn circuit as P2 = (A1B1)^C1 why?

[@rajaakacemi8049]

thank you , from morocco

[@gauravborkar1345]

Very nice one!!

[@sandeepmehta8307]

Hats off sir🙏🙏

[@denebvegaaltair1146]

Nand gates are sometimes used instead of and gates (for the ones feeding the xor) to save transistors

[@DharampreetDhaliwal-qe2lb]

0

[@soniavrm0]

Dear sir..you have posted that you were hiring for your neso academy. I know it's too late as you have posted it 2 years ago. I want to ask if you have any vacancy till now? Please notify me.

[@DrKTechSpecialist]

how we know that we have to draw first 4 add gates ?

[@tanishasharma5621]

check their website

[@abdklaib831]

nice explanation thank u

[@roy_ashutosh]

at 6:36 why can't we use or gate to add the numbers ?? By the example also if we put or gate instead of x-or we get the same answer(8:45 minute)

[@attackontitan9834]

At first I thought same like you but actually we are thinking it because In OR operation we cannot tell the carry...But in case of Half Adder we can...

[@aakashnailwal2249]

I'm also having problem related to this ?

[@aakashnailwal2249]

​@@attackontitan9834this is the reason, right ?

[@swatipawar6063]

It was great to watch your video...

[@RaviKumar-vk6ib]

thank you

[@shubhamsingh1316]

You told in the previous lecture that u will explain full subtractor using nor gate but this lecture is totally different

[@shivaniverma730]

i guess some video are missing like in this sequence " REALIZING FULL SUBTRACTOR USING NOR GATE ONLY" is missing.

[@PulkitMalhotra]

Please upload full substractor using NOR gate

[@ainmiky4620]

what made you use the A1, A0, and B1, B0? What is we are multiplying by 4 bits? will it be A1, A0, A0, A0?

[@CosmJJ]

That was great! Thank you.

[@dilibanb2226]

Can we cascade this 2 bit multiplier so as to get 4 bit multiplier, as we do in full adder circuit?

[@ainmiky4620]

what happens if I have (A3B0) +(C2)+(A2B1) ..... will the next column have two carries?becasue A3B0 + A2B1 will have a carry of C1....but what if there was another carry previiusly from the left column that is C1?

[@sushantkumar3121]

You said in a previous lecture while drawing a k map the maximum combination of 0 or 1is taken but in a question you can take least no of 1 why.

[@Deepakkumar-zt3wm]

sir, what about signed binary multiplier? how can we design a circuit for it?

[@mdrizwanansari6224]

Carry C1=C2=P3. We can avoid last AND gate for P3

[@omarheshamsalahel-din793]

How can we design 2x2 multiplier using Full adders??

[@kshitijkulshrestha2164]

thank you so mch for the help..:)

[@venkteshyaganti9117]

Thanks

[@yeluripavan2126]

Nice video, but you should have told that A.B=AxB when A & B are single bits

[@umagunturi7442]

please upload 3bit multipler as well as 4 bit multiplier using half adders.

[@DrKTechSpecialist]

how we know that we have to draw first 4 add gates ?

[@sangramsarkar310]

cant i use or gate instead of xor gate ??

[@TurtleSergio42]

What changes in the circuit if I need it for ternary numbers?

[@Thinkingsoulz]

why are u using xor gate to find p1 while u need or operation only

[@viveksehwag1163]

fasil pm there for p1 we need half adder in doing p1 operation...in half adder we use xor gate for sum

[@shubhamnayak9369]

ORing is not addition. XOR performs addition

[@AnoNymous-po5sx]

Because in OR gate, 1+1 gives one and that's not addition operation. It may seem at first sight that we can simply use OR gate though that's not the case. We have to use XOR. It's called arithmetic gate for a reason.☺️

[@شوقالرجيعي]

This is awese to watch

[@PIYUSHChamp]

Can we use simply OR gate instead of xor gate?

[@russotragik]

Nope, the truth table of OR and XOR gates are different. OR: b0 b1 | Y 0 0 | 0 0 1 | 1 1 0 | 1 1 1 | 1 XOR: b0 b1 | Y 0 0 | 0 0 1 | 1 1 0 | 1 1 1 | 0 So, your best approach to XOR by using Karnaugh map is: [(NOT b0 AND b1) OR (b0 AND NOT b1)]

[@kundurupavan1429]

IN CASE OF HALF ADDER YOU TOLD THAT WE DON'T TAKE CARRY FROM PREVIOUS SUM BUT HERE YOU HAVE TAKEN CARRY FROM PREVIOUS SUM? PLEASE SOMEONE RESPOND

[@Mans00reh-l4h]

دمت گرم❤

[@mks7624]

How and why the c1 and c2 comes out

[@psps4754]

P1 and P2 can be implemented using OR gate instead of XOR gate?????

[@master_altaf_khan]

thanks

[@zishanali2944]

wow. it helped me too much

[@DrKTechSpecialist]

how we know that we have to draw first 4 add gates ?

[@pullepujaswanth5035]

please upload about 4*4 combinational multiplier

[@madhuyaramala]

Super sir

[@howtoquestions3274]

If i have a 3 bit number multiplicat 3 bit number how can i solve it in 4 bit adder?

[@DrKTechSpecialist]

how you know that we have to draw first 4 add gates ? any one please

[@CSKNOWLEDGEINDIA]

implement 2bit*2bit multiplier using 4*1 multiplexer plz

[@sunilkumarsegu5343]

Can u pls help us in designing a two bit multiplier using decoder

[@trishashukla8454]

I have one doubt half adder is used to add 1 bit no.s only and it doesn't take carry and here we are adding 2 bit no. Using half adder and also we are taking carry I m really very confused 🤔

[@moulanishashaik5284]

Can u pls upload multibit substraction

[@tinotendageorgesithole5640]

can you do a two * 3 BIT multiplier Sir

[@rjstyles3687]

Is this same as 2 bit by 2 bit multiplier

[@Ankit-Maurya_wd1xc6gp2h]

How we take a1,a0,b0,b1 value

[@prajwal4245]

How can Half adder take carry from previous stage???

[@miguelbahena2603]

god bless you!

[@jyotipanpatil7367]

Please provide me the vhdl code for FIR filter design using vedic multiplier.... Please please...🙏🙏🙏🙏🙏

[@michaelaalquino7878]

Sir can you make a truth table for this? Please, thanks

[@m7mdxo438]

thx

[@Mmm232-55]

can we make the same by using IC's?? and how!?

[@AdnanKhan-vi1qo]

Why not , make truth table for multiplier and multiplicand and multiplied answer then using k map you can easily make multipllier using ic's only

[@Farwa60]

won't p1 get a carry from p0?

[@rajesha5812]

Same question for me too

[@syedafzal2062]

Where is the realization of full sub. With nor gate???

[@Ankit-we8ym]

sir I am not finding full subtractor using nor gate only, where is it?

[@akashrathore5699]

That's too complicated, and thus there is no need

[@aly_alsayed]

awesome

[@thetotal9709]

Please , can you provide a video on floating point multiplier, used in FPUs

[@umairkhan-vj9yy]

could've just used half adder instead of using other logical gates.

[@mimi0mimi0mimi0mimi]

How OR became XOR ... i.e; how a1b0 plus a0b1 became a1b0 XOR a0b1 ???

[@JoshMn]

why is half adder used and not full adder?

[@alphasatari]

Josh Mn we have to add only two digits and get carry output so we’re using half adder we need two terminals one for AB and other for C. In full adder we consider three digits (A,B,C) where C is previous carry. So we can use full adder by keeping C as zero.

[@DrKTechSpecialist]

@@alphasatari how we know that we have to draw first 4 add gates ?

[@nasernp7881]

How to design 1 bit multiplier

[@shivanisharma-kz9pm]

Anyone.....Pls tell me the difference btwn multiplier and multiplexer......

[@marquism685]

multi flex selects input

[@leonard-riccardowecke2773]

good video but i am missing the flags :/

[@ibzih]

thicc arrow

[@arka6501]

upload some lecture of OS ....its relay help us

[@smnk1073]

Awsome

[@skandakaranth2748]

why not use truth table and k map would be easier !!1

[@sufeesahin5922]

your lectures are very good, sir can i get your email id please?

[@DrKTechSpecialist]

how we know that we have to draw first 4 add gates ?

[@manaserialcom]

3+2 =6not it's 5

[@MIA-gr6lf]

I want education Not ad Ad u give to business people

[@fish7455]

Why did you not multiply A1B0 by 2?