# Computing - Stacks

> Source: https://ollybritton.com/notes/a-level/computing/topics/stacks/ · Updated: 2020-10-23 · Tags: computing, fundementals-of-data-structures

##### Is a stack FIFO or LIFO??
LIFO.

##### Where do you remove items from the stack??
From the top.

##### What does LIFO stand for??
Last-in First-out

##### What does the `Pop` operation do to a stack??
Returns and removes the item at the top of the stack.

##### What does the `Top` operation do to a stack??
Returns but doesn't remove the top item of the stack.

##### What does the `Push` operation do to a stack??
Puts a new item of the top of a stack.

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