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Microprocessor

Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 PSW
 B-C
 Stack Pointer
 D-E

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Microprocessor
Let the content of accumulator and register B be 0000 0100 and 0100 0000 respectively before execution of instruction SUB B. The content of accumulator after the execution of this instruction will be

 00000100
 11000100
 010001000
 01000000

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Microprocessor
The number of hardware interrupts present in 8085 microprocessor are

 8
 16
 5
 10

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

234
45 H
6 AFH
64 H

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Microprocessor
What are the sets of commands in a program which are not translated into machine instructions during assembly process, called?

 Operands
 Directives
 Mnemonics
 Identifiers

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Microprocessor
The data lines of 8085 microprocessor are multiplexed with

 lower order address lines
 higher order address lines
 status lines
None of these

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