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Microprocessor

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

 0024H
 0028H
 0018H
 0000H

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

 SUB A
 CLR A
 ORA A
 MOV A, 00H

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Microprocessor
Identify the programmable DMA controller from the following

 8253
 8251
 8257
 8279

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Microprocessor
The number of hardware interrupts present in 8085 microprocessor are

 5
 10
 8
 16

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Microprocessor
In 8086, _______ uses a mechanism known as an instruction stream queue to implement a pipeline architecture.

 Execution Unit (EU)
 Bus Interface Unit (BIU)
 Both ‘b’ and ‘c’
 None of these

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Microprocessor
The data bus of any microprocessor is always

 Bi-directional
 Either unidirectional or bi-directional
 Unidirectional
 None

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