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Microprocessor

Microprocessor
Which of the following instruction is not possible in 8085?

 POP B
 POP 30 H
 POP D
 POP PSW

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Microprocessor
Which of the following is type declaration statement in C?

prin = prin * prin
s = s + 1
int bar
king = horse + 1

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Microprocessor
The stack is nothing but a set of

 reserved ROM address space
 reserved RAM address space
None of these
 reserved I/O address space

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Microprocessor
Consider the following I) Sign flag II) Trap flag III) Parity flag IV) Auxiliary carry flag. Which one of the above flags is/are present in 8085 microprocessor?

 (I) & (II)
 (I) ,(III) & (IV)
 (II) & (III)
 (I) only

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Microprocessor
DMA is used between

 memory and I/O
 none
 microprocessor and memory
 microprocessor and I/O

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Microprocessor
Consider the following statements: Arithmetic Logic Unit (ALU) 1.Performs arithmetic operations 2.Performs comparisons. 3.Communicates with I/O devices 4.Keeps watch on the system Which of these statements are correct?

 1, 2, 3 and 4
 3 and 4 only
 1 and 2 only
 1, 2 and 3

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