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Microprocessor

Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 8
 12
 18
 16

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Microprocessor
When any data transfer instruction, to transfer the data from memory to microprocessor, is executed the condition flags are

 not affected
 always set
 always reset
 affected indicating specific conditions

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 None
 00000000
 11111111
 00000001

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Microprocessor
If m is a power of 2, the number of select lines required for an m-input mux is:

2^m
2*m
log2 (m)
m

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Microprocessor
HLT opcode means

  load accumulator with contents of register.
  end of program.
  load data to accumulator.
  store result in memory.

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Microprocessor
The stack is nothing but a set of

 reserved I/O address space
 reserved ROM address space
None of these
 reserved RAM address space

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