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Module 1: Functional Block of computer and Data representaion

20242m

What is the advantage of carry look-ahead adders over ripple carry adders?
i) Simplicity in design
ii) Increased latency
iii) Reduced power consumption
iv) Faster addition by reducing carry propagation delay

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Answer: (iv) Faster addition by reducing carry propagation delay

Carry Look-Ahead Adder (CLA) generates carries in parallel using generate (G) and propagate (P) signals, avoiding ripple delay. Trade-off: more complex hardware but faster. Not simpler or lower power.

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