Microprocessor
Which general register or general register pair is incremented/decremented by 2 during PUSH and POP instructions?

 H-L.
 D-E.
 Program Counter.
 Stack Pointer.

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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.

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

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Microprocessor
Which of the following statements for intel 8085 is correct?

 PC specifies the number of instructions executed so far
 Program Counter (PC) specifies the address of the instruction last executed
 PC specifies the address of the instruction being executed
 PC specifies the address of the instruction to be executed

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