Microprocessor
While STC instruction executes,

 only carry flag will be affected.
 no flags will be affected.
 all flags will be affected.
 only carry and zero flags will be affected.

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Microprocessor
Assertion (A): Negative values of incremental operator in DO loop are allowed in Fortran 77 but not in earlier versions of Fortran. Reason (R): Fortran 77 has better array facilities than earlier versions of Fortran.

Both A and R are correct and R is correct explanation of A
A is wrong R is correct
A is correct R is wrong
Both A and R are correct but R is not correct explanation of A

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Microprocessor
In 8085 microprocessor system with memory mapped I/O, which of the following is true?

 Devices are accessed using IN and OUT instructions
 There can be maximum of 256 input devices and 256 output devices
 Arithmetic and logic operations can be directly performed with the I/O data
 Devices have 8-bit address line

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Microprocessor
Which one of the following is not correct?

 Bootstrap is a technique or device for loading first instruction
 Bus is a group of wires
 An instruction is a set of bits that defines a computer operation
 An interrupt signal is required at the start of every program

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