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Microprocessor

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

 POP D
 POP B
 POP PSW
 POP 30 H

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Microprocessor
Pick up the programmable interrupt controller from the following

 8257
 8259
 8275
 8279

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Microprocessor
The multiplexing of address bus and data buses is used in

 all the microprocessors.
 never multiplexed.
 depends on the internal architecture.
 none of these.

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Microprocessor
Which one of the following interrupt/interrupts is/are only level triggering?

 RST 5.5
 RST 6.5
 both ‘a’ and ‘b’
 TRAP

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Microprocessor
We say that a set of gates is logically complete if we can build any circuit without using any other kind of gates. Which of the following sets are logically complete

Set of {AND,OR}
Set of {EXOR, NOT}
Set of {AND,OR,NOT}
None of these

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Microprocessor
The control flags in 8086 are:

All of these
 the interrupt flag(IF).
 the Trap flag(TF).
 the direction flag(DF).

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