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 wrong R is correct
Both A and R are correct and R is correct explanation of A
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
Program counter in a digital computer

 Counts the numbers of programs run in the machine.
 Points the memory address of the next instruction to be fetched.
 Counts the number of times the loops are executed.
 Counts the number of times a subroutine is called.

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