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Microprocessor

Microprocessor
In Fortran 77 a variable name can contain special characters.

False
True

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Microprocessor
What is SIM?

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

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Microprocessor
The data lines of 8085 microprocessor are multiplexed with

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

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

 B-C
 Stack Pointer
 D-E
 PSW

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

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Microprocessor
The relation among IC (Instruction Cycle), FC (Fetch cycle) and EC (Execute Cycle) is

 EC = IC + FC
 IC = FC + 2EC
 IC = FC + EC
 IC = FC - EC

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