Digital Electronics - Digital Arithmetic Operations and Circuits
Exercise :: Digital Arithmetic Operations and Circuits - General Questions
| 41. |
Which of the following is correct for full adders? |
| A. |
Full adders have the capability of directly adding decimal numbers. | | B. |
Full adders are used to make half adders. | | C. |
Full adders are limited to two inputs since there are only two binary digits. | | D. |
In a parallel full adder, the first stage may be a half adder. |
Answer: Option D
Explanation:
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| 42. |
Convert each of the signed decimal numbers to an 8-bit signed binary number (two's-complement).
+7 –3 –12 |
| A. |
0000 0111 1111 1101 1111 0100 | | B. |
1000 0111 0111 1101 0111 0100 | | C. |
0000 0111 0000 0011 0000 1100 | | D. |
0000 0111 1000 0011 1000 1100 |
Answer: Option A
Explanation:
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| 43. |
What is one disadvantage of the ripple-carry adder? |
| A. |
The interconnections are more complex. | | B. |
More stages are required to a full adder. | | C. |
It is slow due to propagation time. | | D. |
All of the above. |
Answer: Option C
Explanation:
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| 44. |
Solve this binary problem: 01000110 ÷ 00001010 = |
Answer: Option A
Explanation:
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| 45. |
Divide the following binary numbers.
 |
| A. |
0000 0010 0000 0010 1000 1111 | | B. |
0000 0010 0001 0010 0000 0100 | | C. |
0000 0011 0000 0010 0000 0100 | | D. |
0000 0010 0000 0010 0000 0100 |
Answer: Option D
Explanation:
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