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Digital Electronics - Computers

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