Binary adder.
Binary adder is a logic circuit which perform binary addition. Binary adders are of two types 1. Half adder 2. Full adder
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Half adder.
A logic circuit that can add two binary bits is called a half adder (HA). It is a combinational logic circuit in which outputs is only dependent on present input. It is used for the addition of 2 binary digits. It contains 2 inputs & 2 outputs. One output is sum & another is carry out. Block diagram of half adder is shown in figure,