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Q. |
The full subtractor can be implemented using |
A. | two xor and an or gates |
B. | two half subtractors and an or gate |
C. | two multiplexers and an and gate |
D. | two comparators and an and gate |
Answer» B. two half subtractors and an or gate | |
Explanation: a full subtractor has 3 input bits and two outputs bits borrow and difference. the full subtractor can be implemented using two half subtractors and an or gate. |
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