Exercise: Microprocessors

Questions for: Microprocessors

The chip 8259 is a
A:
programmable interrupt controller
B:
programmable peripheral interface
C:
I/O device
D:
memory chip
Answer: A
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Which of the following directives in 8085 causes one byte to be reserved in the memory?
A:
D S
B:
D B
C:
D W
D:
E Q U
Answer: D
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Internally the two distinct units of 8086 are called
A:
bus interface unit and execution unit
B:
command unit and follow unit
C:
master unit and slave unit
D:
memory unit and operation unit
Answer: A
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Consider the following statements about constants in 8085
  1. The assembler treats 64 H as hexadecimal constant.
  2. The assembler treats 154 as binary constant.
  3. The assembler treats 540 as octal constant.
  4. The assembler treats 138 as decimal constant.
Which of the above are correct?
A:
1, 2 and 3 only
B:
1, 3 and 4 only
C:
1 and 3 only
D:
2 and 4 only
Answer: B
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The signals in 8086 are classified into
A:
minimum mode and maximum mode
B:
decrement mode and increment mode
C:
low mode and high mode
D:
none of the above
Answer: A
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