Microprocessor
In 8085 microprocessor based system maximum possible number of input/output devices can be connected using I/O mapped I/O technique is

 256
 64
 65536
 512

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

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