Microprocessor
The stack pointer register in a microprocessor

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

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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.

 A is false but R is true.
 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.

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