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Statement I: I/O devices can be accessed using IN and OUT instructions.Statement II: Arithmetic and logic operations can be directly performed with I/O data.Code:1. Both Statement I and Statement II are individually true and Statement II is the correct explanation of Statement I2. Both Statements I and Statement II are individually true but Statement II is mot the correct explanation of Statement I3. Statement I is true but Statement II is false4. Statement I is false but Statement II is true

Answer» Correct Answer - Option 4 : Statement I is false but Statement II is true

Statement I: False

  • In memory-mapped I/O, devices cannot be accessed using IN and OUT instructions
  • IN and OUT both are 2-byte instructions in 8085 processor

 

Example:

IN – port address DB (Hexadecimal)

OUT-port address D3 (Hexadecimal)

So statement 1 is False

Statement II: True

In memory-mapped I/O, arithmetic and logic operations can be directly performed with the I/O data.



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