Design a full adder using 3:8 decoder

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written 6.1 years ago by

vedantchikhale • 860

modified 5.2 years ago by

abhishektiwari1 • 100

digital system design

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written 6.1 years ago by

vedantchikhale • 860

The truth table of a full adder is shown in Table:-

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i. The A, B and Cin inputs are applied to 3:8 decoder as an input.

ii. The outputs of decoder m1, m2, m4 and m7 are applied to OR gate as shown in figure to obtain the sum output.

iii. Similarly outputs m3, m5, m6 and m7 are applied to another OR gate to obtain the carry output.

iv. Implement of full adder is shown in figure.

enter image description here

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