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Microprocessor

Microprocessor
Which instruction is required to rotate the content of accumulator one bit right along with carry?

 RAR
 RLC
 RRC
 RAL

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

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

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Microprocessor
Maximum of how many devices can be connected simultaneously to the microprocessor via 8257 in DMA data transfer mode?

 8
 10
 6
 4

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Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 12
 18
 16
 8

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Microprocessor
_____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts.

 DI
 RIM
 SIM
 EI

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Microprocessor
PSW stands for

 none
 accumulator and flag register contents
 flag byte
 accumulator contents

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