Hi Student

Half Adder is a combinational logic circuit that is designed by connecting one EX-OR gate and one AND gate. The half adder circuit has two inputs: A and B, which add two input digits and generate a carry and a sum.

The output obtained from the EX-OR gate is the sum of the two numbers while that obtained by AND gate is the carry. There will be no forwarding of carrying addition because there is no logic gate to process that. Thus, this is called Half Adder circuit.

The Link to answer your question:

Half Adder Circuit designed using IC7400  (https://www.homemade-circuits.com/simple-circuits-using-ic-7400-nand-gates/)

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Best Wishes