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A 5-bit adder can be used as a subtractor by utilizing the concept of two's complement. To perform subtraction, you can invert the bits of the number to be subtracted (the subtrahend) and add 1 to it, effectively converting it to its two's complement. Then, you input this modified value along with the minuend into the 5-bit adder. The result will be the difference of the two numbers, allowing the adder to function as a subtractor.

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Draw 8 bit half adder?

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