You are now entering the PC Anatomy portal

In computing, "stack" can refer to a LIFO data structure or a collection of software components. A LIFO (Last-In, First-Out) stack is a data structure where the last item added is the first one removed, used for temporary storage and function calls. A software or technology stack is a hierarchical set of software layers, such as an operating system, database, and programming language, that work together to run an application.

LIFO data structure

Description: A sequential collection of data where elements are added (pushed) and removed (popped) from the same end, called the "top".

Principle: It operates on the Last-In, First-Out (LIFO) principle, like a stack of plates. The last plate placed on top is the first one removed.

Applications: Call stack: Manages information about active subroutines (functions) and the order in which they are called and returned from.

Expression evaluation: Used to evaluate mathematical expressions.

Temporary storage: Holds data temporarily while a program is running.

Software/technology stack

Description: A group of independent software components, typically arranged in a hierarchy, that are necessary to build and run a web application or other software.

Components: The specific technologies vary, but commonly include: Operating System (OS). Programming Language. Database. Web Server. Application Frameworks.

Functionality: The layers work together. For example, in a web stack, the web server delivers information to a browser, which then uses a programming language like JavaScript to render the page.