calculate each of the following for ripple carry and carry lookahead designs show your work the cost of stage 4 only the critical path delay of an 10 stage adder the total cost of a 12 stage 12301

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SOLVED: Prob, 2 Consider the 64-bit adders constructed in the following three ways: (refer to lecture 4-1) Design-1: ripple-carry connection of 1-bit full adders Design-2: ripple-carry connection of 4-bit carry-lookahead adders Design-3: ripple-carry connection of 16-bit hierarchical carry-lookahead addersA. 128d B. 256d C. 512d D. None of the above2.2) Determine the AND/OR gate complexity of Design-1: A. 88 AND/OR B. 256 AND/OR C. 352 AND/OR D. None of the above 2.3) Determine the XOR gate comp