Last Updated :
27 Nov, 2018
Consider the following statements regarding implementations of half-adder and half-subtractor:
- Total 5 NAND gates are required to implement half adder and 5 NAND gates are required to implement half subtractor.
- Total 5 NAND gates are required to implement half adder and 5 NOR gates are required to implement half subtractor.
- Total 5 NOR gates are required to implement half adder and 5 NAND gates are required to implement half subtractor.
- Total 5 NOR gates are required to implement half adder and 5 NOR gates are required to implement half subtractor.
(A) Only 1, 2 and 3 are correct
(B) Only 2 and 3 are correct
(C) Only 1 and 4 are correct
(D) All 1, 2, 3, and 4 are correct
Answer: (D)
Explanation: Total 5 NAND (or 5 NOR) gates are required to implement half adder and 5 NAND (or 5 NOR) gates are required to implement half subtractor.
Option (D) is correct.
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