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Answer:
The gates required to build a half adder are :
- AND Gate for Carry.
- XOR Gate for Sum
Explanation:
AND Gate is required for the carry and the XOR gate is required for the sum.
The figures for the gates and the truth tables for the half adder are attached so please refer them for further explanation.
The sum is 1 when one of the input is High or 1 if both the inputs are same then the sum is 0.So this behavior is implemented by X-OR gate.
The carry is High only when both of the inputs are 1.This is implemented by AND-Gate.
