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Microprocessor

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

 D-E
 PSW
 Stack Pointer
 B-C

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Microprocessor
RST 3 instruction will cause the processor to branch to the location

 0024H
 0028H
 0018H
 0000H

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Microprocessor
In 8085 microprocessor based system maximum possible number of input/output devices can be connected using I/O mapped I/O technique is

 64
 65536
 512
 256

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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
 4
 6
 10

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Microprocessor
DMA is used between

 microprocessor and memory
 none
 microprocessor and I/O
 memory and I/O

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Microprocessor
The cycle required to fetch and execute an instruction in a 8085 microprocessor is which one of the following?

 Clock cycle
 Machine cycle
 Memory cycle
 Instruction cycle

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