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Microprocessor

Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NOR-NAND
OR-NAND
NAND-NAND
NAND-NOR

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

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

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Microprocessor
Total numbers of output pins in 8085 microprocessor are

 30
 13
 40
 27

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 Execution Unit (EU)
 Both ‘c’ and ‘d’
 None of these
 Bus Interface Unit (BIU)

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Microprocessor
In microprocessor based system DMA refers to

 direct memory access for the I/O device
 direct memory access for microprocessor
 direct memory access for the user
None of these

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

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

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