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Microprocessor

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

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

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Microprocessor
RST0 - RST7 are the __________ in 8085.

 hardware interrupts
 software interrupts
 logical interrupts
 conditional interrupts

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 00000001
 11111111
 00000000
 None

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

 B-C
 D-E
 PSW
 Stack Pointer

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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

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

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

one million
10000
100000
1000

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