Question: Assuming PG unit delay of 2 delta, CLA unit 2 delta, and the sum 2 delta. What will the delay of the 256-bit fast adder

Assuming PG unit delay of 2 delta, CLA unit 2 delta, and the sum 2 delta. What will the delay of the 256-bit fast adder be if the carry lookahead (CLA) is limited to maximum of 8 bits. - I think the answer to this is 14 delta but I would appreciate an explanation of how to get to that number.

Repeat the same problem for 128-bit adder limiting CLA to 4-btis.

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