Advantages and disadvantages of carry look ahead adder
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A carry-look ahead adder or CLA is a type of adder which is used in digital logic to decrease the carry propagation time.
Advantage
It improves the speed. It calculates one or more carry bits before the sum, this reduces the wait time to calculate the result of the bits which have a larger value.
Disadvantage
The carry logic block becomes very complicated for more than 4-bits.
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