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Microprocessor

Microprocessor
The five flags in 8085 are designated as

Z, CY, S, P and AC
Z, C, S, P, AC
D, Z, S, P, AC
Z, CY, S, D, AC

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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
The number of output pins in 8085 microprocessors are

 19.
 21.
 27.
 40.

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Microprocessor
In 8086 the number of bytes which can be addressed directly is about

1000
100000
10000
one million

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Microprocessor
The stack pointer

 resides in ROM
 resides in RAM
 resides in microprocessor
 may be in RAM or ROM

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Microprocessor
‘Burst refresh’ in DRAM is also called

Concentrated refresh
Hidden refresh
Distributed refresh
None of these

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