The logic circuit of binary adder which is used to add 4-bits bin
A. 1,3
B. 3,1
C. 2,2
D. 4,0
Please scroll down to see the correct answer and solution guide.
Right Answer is: A
SOLUTION
Concept:
A binary adder is a logic circuit in the form of a half adder and full adder which is used to add the binary digits.
Explanation:
Half adder: it is a logic circuit that performs addition on two binary digits. It produces a sum and carry.
Full adder: It is a logic circuit that takes three inputs to perform addition. Two binary input and one carry-in input of the previous stage is used. It generates sum and carry (C-out). C-in is a carry from a less significant digit and c-out is a carry from the most significant bit.
If we want to add two n- bit binary adders then it requires 1 half adder and n-1 full adder to complete the circuit. So, in the given question to add 4- bit binary numbers requires 1 half adder and 3 full adders.
