Half adder & Full Adder

Adder:

A combinational circuit that performs the addition of binary bits.

Half Adder

Half adder is a combinational logic circuit with two inputs and two outputs. The half adder circuit is designed to add two single bit binary number A and B. It is the basic building block for addition of two single bit numbers. This circuit has two outputs carry and sum.
Block Diagram
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Based on the number of input and output variables, we can formulate a truth table to identify the function of the half-adder.
Truth Table : Half Adder
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The logic diagram of Half-Adder is shown below:
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Full-Adder

Full  adder is a combinational logic circuit with three inputs and two outputs. The full adder circuit is designed to add two single bit binary number A and B and the carry. It is the basic building block for addition of two single bit numbers and carry from previous lower significant position. This circuit has two outputs carry and sum.
Block Diagram
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Based on the number of input and output variables, we can formulate a truth table to identify the function of the full-adder.
Truth Table : Full Adder
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The logic diagram of Full-Adder is shown below:
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