MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -This circuit is known as the half adder. It can not handle the addition of any two arbitrary numbers because it does not allow the input of a carry bit from the addition of two previous digits. A circuit that can handle these three inputs can perform the addition of any two binary numbers.

Detailed explanation-2: -Unlock Full Solution (Free) Half Adder: It is a Combinational Logic Circuit with two inputs and two outputs. It is the basic building block for the addition of two single-bit numbers. The half-adder circuit is designed to add two single-bit binary numbers.

Detailed explanation-3: -Half-adders have a major limitation in that they cannot accept a carry bit from a previous stage, meaning that they cannot be chained together to add multi-bit numbers.

Detailed explanation-4: -The half adders (HA’s) are designed with the combination of two logic gates like AND & EX-OR whereas the FA is designed with the combination of three AND, two XOR & one OR gates. Basically, HA’s operate on 2-two inputs of 1-bit, whereas the FA’s operate on three inputs of 1-bit.