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What is a half-adder? Explain a half-adder with the help of truth-table and logic diagram.
Ans.Half Adder: It is a logic circuit for the addition of two 1-bit numbers is termed to as an half-adder. The process of addition is exemplified in truth table demonstrated in Table. There A and B are the two inputs and also S (SUM) and C (CARRY) are two outputs.
A
B
S
C
0
1
Truth Table for Half AdderBy the truth table, we get the logical expressions for S and C outputs that isS = A B+A BC = ABAn Half-adder logic diagram using gates is demonstrated in figure given below:
Logic Diagram for an Half-adder
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