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GATE Online Test 1 - Digital Circuits | Computer Science(CS)
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Two nibble adder can be implemented by (without initial carry)
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A
3 full adder and a half adder
💡 Explanation:
A nibble is 4 bits. When adding two 4-bit numbers without an initial carry, the least significant bit (LSB) position only needs a half adder since there's no carry-in. The remaining 3 bit positions each require a full adder to handle the carry-out from the previous stage. Therefore, 3 full adders and 1 half adder are needed.