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Microprocessor

Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 XRI 0FH
 ANI F0H
 XRI FOH
 ANI OFH

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Microprocessor
The operations executed by two or more control units are referred as

 Bi control-operations
 Macro-operations
 Multi-operations
 Micro-operations

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Microprocessor
It is possible to copy a file in the same directory.

True
False

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Microprocessor
What is SIM?

  Set interrupt mask.
 None of these.
 Sorting interrupt mask.
 Select interrupt mask.

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Microprocessor
If the sign bit of mantissa is 0 and the exponent is increased from a positive to a more negative number the result is

A larger floating point number
A smaller floating point number
Either A or B depending on the actual number
A negative floating point number

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Microprocessor
Consider the following statements: Arithmetic Logic Unit (ALU) 1.Performs arithmetic operations 2.Performs comparisons. 3.Communicates with I/O devices 4.Keeps watch on the system Which of these statements are correct?

 3 and 4 only
 1 and 2 only
 1, 2 and 3
 1, 2, 3 and 4

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