M

Mr. Dubey • 52.26K Points
Coach 

Q. The number of full and half adders are required to add 16-bit number is

(A) 8 half adders, 8 full adders
(B) 1 half adders, 15 full adders
(C) 16 half adders, 0 full adders
(D) 4 half adders, 12 full adders
Correct : Option (B)

Explanation: 
 half adder has two inputs and two outputs whereas full adder has 3 inputs and 2 outputs. one half adder can add the least significant bit of the two numbers whereas full adders are required to add the remaining 15 bits as they all involve adding carries.

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