Carry Look Ahead Adder (CLA) Explained

In this video, the Carry Look Ahead Adder (Look Ahead Carry Adder) is explained in detail and the design of the 16-bit adder using 4-bit Carry Look ahead (CLA) blocks is also explained at the later part of the video.
Timestamps:
0:00 Limitation of Ripple Carry Adder
2:00 Carry Generation and Carry Propagation logic in CLA
4:40 Carry Look Ahead logic for 4-bit Adder
10:28 Delay Comparison between Ripple Carry Adder and Carry Look Ahead Adder
13:30 Limitations of Carry Look Ahead Adder
14:52 16-bit Adder using 4-bit CLA blocks
Digital Electronics (Playlist):
• Digital Electronics
Carry Look Ahead Adder:
In Carry Look Ahead Adder, using the Carry Look Ahead logic (the additional combinational circuit), the carry bit of each adder is generated at the same time.
In this Look Ahead Carry Adder, each stage of the adder receives the carry bit at the same time. And hence, the speed of the addition is much faster than Ripple Carry Adder.
As the number of bits in the adder circuit increases, the improvement in the speed is more prominent.
Limitation of Carry Look Ahead Adder:
As the number of bits in the adder increases, the cost and the complexity of the design increase.
This video will be helpful to all the students of science and engineering in understanding the Carry Look Ahead Adder (CLA).
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Music Credit: www.bensound.com

[@ALLABOUTELECTRONICS]

For more information, check Digital Electronics (Playlist):
th-cam.com/play/PLwjK_iyK4LLBC_so3odA64E2MLgIRKafl.html
Timestamps:
0:00 Limitation of Ripple Carry Adder
2:00 Carry Generation and Carry Propagation logic in CLA
4:40 Carry Look Ahead logic for 4-bit Adder
10:28 Delay Comparison between Ripple Carry Adder and Carry Look Ahead Adder
13:30 Limitations of Carry Look Ahead Adder
14:52 16-bit Adder using 4-bit CLA blocks

[@shivaram6991]

my soul left my body after trying to analyse the last circuit design

[@Motion-Studio]

mine alsooooo

[@anushkasaxena590]

I'm honestly so so so grateful to this channel and this person! You not just made me score good in exams but made me understand the deep meaning of concepts. Thank you very much, truly grateful to you!

[@poojakhanna6942]

This tutorial explains it better than any other one I have watched. Thank you so much for the tutorial.

[@HogenkampNick]

10:28 Gx and Px should be switched in the Carry Look Ahead Logic Circuit block.

[@DhrithikRaj]

Yes. Thanks for this!

[@jackey-mill3634]

Yeahp

[@awaviarybangalore]

Complexity explained in the flow of water, hats off sir.

[@Stevensmith30247]

Very Perfect Explanation for the CLA

[@user-jq2cx3sq3q]

So smoothly presented! Thank you!

[@mayurshah9131]

Always enjoying your posts

[@PalashKantiKundu]

Beautifully explained.

[@Ansari-go5dr]

Straight to point explanation... Go ahead sir🥳

[@NightVisixn]

Very good tutorial man, thanks for the video

[@trunghieule758]

Everything is fully explained. Thank you!

[@nverkhachoyan]

Amazing video! Thank you so much

[@urmilareddy6047]

Wonderful explaination....🔥🔥🔥

[@meanpillscasper]

Fantastic explanation, thanks!

[@theawes0me0ne]

Thank you very much, i finally understand the gate logic behind CLA adders. Been trying to learn the gates to make a faster binary adder in a game.

[@vincecs]

This was an amazing explanation👍

[@kalebm1279]

I am literally in love with you now I can finish my homework

[@user-ye7hw7qr5c]

I hope you can explain the last two-level carry-lookahead.

[@user-ed6ho2om7x]

the last circuit for CLA is bit complicated to understand for me can you please explain it

[@rafikfarhane713]

whats about the delay in the last clag ?

[@uyioduware693]

Is it not supposed to be 3 gate delays, because it waits for 3 parallel gates before it's passed to the final gate for implementation.
Like the 3 parallel gates are delaying the calculation in the final gate.

[@lymtics88]

I'm confused cuz on Harris&Harris textbook, Propagation is A+B(i.e. A or B) but not A xor B, why is that?

[@akshithlyrics2504]

Sir can you explain me about gate delay . Why it is 1 gate delay & 2 gate delay ?

[@user-wl7ty2ry4v]

awesome

[@mohammedsameer3012]

time 10:23 in the video there is mistake that is you took P as carry insted of sum. specifically in P1, P2,.....

[@kartii__45]

What is P ? Propagation P=A XOR B right..... we will get that separately but as you said, at mentioned time stamp as per the CLA circuit diagram, it is generating carry as C1,C2,C3..... .The Main flow will be ----{P & G Generation=CLA=ADDER}-----. The sum Output must be A XOR B XOR C(Carry) .

[@TheRojo387]

So synchronous carry is actually carry lookahead…

[@maximekahn]

Which adder is currently implemented in the industry?

[@jacks6910]

Both

[@jacks6910]

The benefits and drawbacks to each both have a place for specific tasks.

[@user-dl8sc6hy2s]

I am having very informative time to listen your lecture but I cannot lie that I haven't noticed your intonation. Are u indian robot? I am sorry If this offends you. I love your contents!!

[@Mo__Ga]

Also immediately noticed, the way sentences are always ended on a low pitch along with the strange pauses in between reminds me of early text to speech.