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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 EPROM
 microprocessor
 ROM
 RAM

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 1000 H and 1001 H
 1000 H and 0FFF H
 0FFE H and 0FFF H
 0FFF H and 0FFE H

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Microprocessor
In microprocessor based system DMA refers to

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

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Microprocessor
While CMP B instruction executes,

 all flags will be affected.
 no flags will be affected.
 only carry flag will be affected.
 only carry and zero flags will be affected.

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

one million
100000
10000
1000

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Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 16
 7
 13
 10

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