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Microprocessor

Microprocessor
DMA is used between

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

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

 0000H
 0024H
 0018H
 0028H

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Microprocessor
While STC instruction executes,

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

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Microprocessor
Which one of the following circuits transmits two messages simultaneously in one direction

 Duplex
 Diplex
 Quadruplex
 Simplex

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Microprocessor
Which one of the following interrupt/interrupts is/are only level triggering?

 both ‘a’ and ‘b’
 RST 6.5
 RST 5.5
 TRAP

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 MOV A, 00H
 CLR A
 SUB A
 ORA A

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