Microprocessor
The stack pointer register in a microprocessor

 holds the address of the top of the stack
 counts the number of instructions being executing on the microprocessor
 counts the number of programs being executing on the microprocessor
 keeps the address of the next instruction to be fetched

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

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