What is stack pointer?
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Answer / Pradeep Kumar Kannoujiya
In the Intel 8086 microprocessor, the stack pointer (SP) is a register that holds the memory address of the top of the stack. The stack is a region in memory used for temporary storage of data during program execution. Whenever a subroutine is called or a function is invoked, the processor pushes the current value of the SP onto the stack, and whenever a subroutine returns, it pops the previous value from the stack to restore the original SP value.
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