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Microprocessor

Microprocessor
SPHL instruction copies the content of H-L register pair to the _________.

 Stack Pointer
 B-C
 PSW
 D-E

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

 S, Z, AC, P, CY
 S, OV, AC, P, CY
 S, Z, OV, P, CY
 S, Z, AC, P, OV

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Microprocessor
Which of the following is not a general purpose peripheral?

Programmable CRT controller
Programmable interrupt controller
Programmable interval timer
I/O port

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Microprocessor
An I/O processor controls the flow of information between

Cache memory and I/O devices
Two I/O devices
Main memory and I/O devices
Cache and main memory

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Microprocessor
Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.

DOUBLEWORD (32 bits)
NIBBLE
BYTE
WORD (16 bits)

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Microprocessor
Which one of the following circuits transmits two messages simultaneously in one direction

 Simplex
 Diplex
 Quadruplex
 Duplex

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