ISRO | ISRO CS 2020 | Question 8

In a 8-bit ripple carry adder using identical full adders, each full adder takes 34 ns for computing sum. If the time taken for 8-bit addition is 90 ns, find time taken by each full adder to find carry.
(A) 6 ns
(B) 7 ns
(C) 10 ns
(D) 8 ns

Answer: (D)


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