Stack Memory

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Stack Memory is a data area or buffer used for storing requests that need to be handled. The IBM Dictionary of Computing says that a stack is always a push-down list, meaning that as new requests come in, they push down the old ones. Another way of looking at a push-down list - or stack - is that the program always takes its next item to handle from the top of the stack. (This is unlike other arrangements such as “FIFO” or “first-in first-out.”)

Source: https://whatis.techtarget.com/definition/stack