MICROPROCESSOR AND MICROCONTROLLER

MICROPROCESSOR 8086

ARCHITECTURE OF 8085

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The SP is indicated by ____
A
single pointer
B
stack pointer
C
source pointer
D
destination pointer
Explanation: 

Detailed explanation-1: -The Stack Pointer (SP) register is used to indicate the location of the last item put onto the stack. When you PUT something ONTO the stack (PUSH onto the stack), the SP is decremented before the item is placed on the stack.

Detailed explanation-2: -The correct answer is the Address of the top element of the stack.

Detailed explanation-3: -In 8086, the main stack register is called stack pointer-SP. The stack segment register (SS) is usually used to store information about the memory segment that stores the call stack of currently executed program. SP points to current stack top.

Detailed explanation-4: -Explanation: Stack pointer is initialized before stack operation, it is a 16-bit register that stores data temporarily. It follows a LIFO operation. So, it contains the address of the top of the stack memory.

Detailed explanation-5: -Stack Pointer: The stack pointer in the 8085 microprocessor is a 16-bit register that stores the address of the top of stack memory. The value of the stack pointer is decremented by 2 in the PUSH operation. It will increment by 2 in POP operation.

There is 1 question to complete.