Definition
An "operating system" (OS) is the fundamental software that manages computer hardware and software resources. It provides essential services for computer programs. Think of it as the conductor of an orchestra, managing all the different instruments (hardware and software). The OS provides a platform for applications to run. It handles tasks such as memory management, file system organization, and input/output operations. Examples include Windows, macOS, Linux, Android, and iOS. An OS is essential for computers to function properly.