The following circuit is a :

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This question was previously asked in

KVS TGT WET (Work Experience Teacher) 23 Dec 2018 Official Paper

Answer 1

A half adder circuit is made up of an AND gate with an XOR gate as shown below:

Electronic Mechanic 59 26Q FT Qbank Part 1 Hindi images Q9

A half adder is also known as XOR gate because XOR is applied to both inputs to produce the sum
Half adder can add only two bits (A and B) and has nothing to do with the carry
If the input to a half adder has a carry, then it will neglect it and adds only the A and B bits
That means the binary addition process is not complete and that's why it is called a half adder

Sum (S) = A⊕B, Carry = A.B