Which of the following digital logic circuits can be used to add more than 1 – bit simultaneously?

A)
Serial adder
B)
Ripple – carry adder
C)
Full – adder
D)
Half – adder

Correct Answer : Option (B) :   Ripple – carry adder


Explanation : A Ripple – carry adder is a parallel binary adder in which the addition of more than 1 – bit data can be done simultaneously. The inputs to a parallel circuit can be sent and processed at once unlike series circuits in which inputs are sent one by one.