IT123A0809

Stack

A.Definition/Concept

Stack an abstract data type and data structure based on LIFO or the Last In First Out. It is used extensively at every level of modern computer system. Example of this, a modern PC uses stacks at the architecture level, which are used in the basic design of an operating system for interrupt handling and operating system function calls.[wiki]

B. Illustration

C. References

 [1]  http://en.wikipedia.org/wiki/File:Data_stack.svg
 [2] http://en.wikipedia.org/wiki/Stack_(data_structure)