Question: Design two adders: a 64-bit ripple-carry adder and a 64-bit carry-look-ahead (CLA) adder with 4-bit CLA blocks. Lets assume that the 1-bit full adder and

Design two adders: a 64-bit ripple-carry adder and a 64-bit carry-look-ahead (CLA) adder with 4-bit CLA blocks. Lets assume that the 1-bit full adder and CLA logics are built from two-input logic gates only, where each two-input gate has an area of 15 m2 and a propagation delay of 50 ps.

(a) Estimate the area and critical-path delay of a 64-bit ripple-carry adder. (b) Estimate the area and critical-path delay of a 64-bit CLA adder. (C) Compare the two adder design in a table and discuss the trade-offs between area and delay. How do you choose between a carry-ripple and a CLA adder in practical design?

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