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Microprocessor

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

 Stack Pointer
 D-E
 PSW
 B-C

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Microprocessor
The operations executed by two or more control units are referred as

 Micro-operations
 Bi control-operations
 Multi-operations
 Macro-operations

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 1, 2, 5
 2, 3, 5
 1, 3, 4
 1, 3, 5

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Microprocessor
If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory)

Remains unchanged
Halves
Increases by 2^(address bits)/addressability
Doubles

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Microprocessor
The timing difference between a slow memory and fast processor can be resolved if

Processor is capable of waiting
Either A or B
External buffer is used
Neither A nor B

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Microprocessor
The maximum number of seven segment displays that can be connected to 8279 is

 16
 12
 8
 18

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