why the carry have a feedback to the same adder

All queries related to number system, flip-flops, logic designs and CMOS based digital circuits.
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fahim1
Posts: 1
Joined: Wed Jun 17, 2015 8:06 pm

why the carry have a feedback to the same adder

Post by fahim1 » Wed Jun 17, 2015 8:14 pm

hi
this photo is related to a lowpower multiplier and as u see the carry of each multiplier have a feedback to the same adder.
i cannot understand why ?
i would appreciate if some body help me
Image

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