👉 Upgrade in programming refers to the process of changing or modifying a program's structure, function, data type, or any other aspect that allows it to run more efficiently on a new hardware or operating system. This can involve adding new features, making existing code more efficient, or replacing old components with newer ones. For example, if you're programming a new application for a mobile phone, upgrading the software might mean changing its layout, font size, and color scheme, while also fixing any bugs that may
