Digital Electronics - Digital Arithmetic Operations and Circuits
Exercise :: Digital Arithmetic Operations and Circuits - General Questions
| 71. |
Why is a fast-look-ahead carry circuit used in the 7483 4-bit full-adder? |
| A. |
to decrease the cost | | B. |
to make it smaller | | C. |
to slow down the circuit | | D. |
to speed up the circuit |
Answer: Option D
Explanation:
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| 72. |
Find the 2's complement of –1101102. |
| A. |
1101002 | | B. |
1010102 | | C. |
0010012 | | D. |
0010102 |
Answer: Option D
Explanation:
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| 73. |
What logic function is the sum output of a half-adder? |
| A. |
AND | | B. |
exclusive-OR | | C. |
exclusive-NOR | | D. |
NAND |
Answer: Option B
Explanation:
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| 74. |
The binary adder circuit is designed to add ________ binary numbers at the same time. |
Answer: Option A
Explanation:
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