Question map
Which one of the following is not an operating system?
Explanation
An operating system (OS) is the core software that manages computer hardware and allows users to interact with the system. Microsoft Windows is a widely used commercial operating system developed by Microsoft. Linux is an open-source operating system known for its flexibility and security. Ubuntu is a popular distribution belonging to the Linux family, developed by Canonical Ltd. In contrast, MS-Excel is not an operating system but a spreadsheet application software. It was originally developed to compete with programs like Lotus 1-2-3 and is used for data recording and analysis within an operating system environment like Windows or macOS. While Windows and Ubuntu provide the platform for a computer to function, MS-Excel is a specific tool designed for productivity tasks.