Microprocessor
Program counter in a digital computer

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

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Microprocessor
Assertion(A): Ready signal of microprocessor is used to detect whether a peripheral is ready for the data transfer or not. Reason(R): In the microprocessor during data transfer operations, the wait states are added by forcing the ready signal low.

 Both A & R are true and R is the correct explanation of A.
 Both A & R are true but R is not the correct explanation of A .
 A is true but R is false.
 A is false but R is true.

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