Digital Electronics - Computers
Exercise :: Computers - General Questions
| 11. |
What is occurring when two or more sources of data attempt to use the same bus? |
| A. |
Bus contention | | B. |
Direct memory access | | C. |
Bus interruption | | D. |
PPI |
Answer: Option A
Explanation:
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| 12. |
Which of the following is not a jump instruction? |
| A. |
JB (jump back) | | B. |
JA (jump above) | | C. |
JO (jump if overflow) | | D. |
JMP (unconditional jump) |
Answer: Option A
Explanation:
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| 13. |
Which of the following was not a design improvement for the 8086/8088 over the 8085? |
| A. |
Execution unit (EU) | | B. |
16-bit data bus | | C. |
Arithmetic logic unit (ALU) | | D. |
Bus interface unit (BIU) |
Answer: Option C
Explanation:
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| 14. |
Polled I/O works best when ________. |
| A. |
there are no priority considerations | | B. |
priority considerations are frequent | | C. |
the polling rate exceeds 1000 s | | D. |
the polling rate is below 1000 s |
Answer: Option A
Explanation:
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| 15. |
Which of the following is not an arithmetic instruction? |
| A. |
INC (increment) | | B. |
CMP (compare) | | C. |
DEC (decrement) | | D. |
ROL (rotate left) |
Answer: Option D
Explanation:
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