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OS - Operating System
An Operating System (OS) is the software that manages a computer's hardware and software resources, providing a platform for applications to run. The OS handles tasks such as memory management, file systems, and user interface interactions. Popular operating systems include Windows, macOS, Linux, and Android. The OS is the backbone of any computing device, enabling users to interact with the system through graphical interfaces or command-line inputs, while ensuring that applications and processes run efficiently.