What is Operating System (OS)?

An operating system (OS) is a computer system's software that is responsible for fulfilling various tasks that allow the device to operate. An OS is responsible for managing computer hardware and software and provides common services for computer programs. Operating systems are responsible for tasks such as memory management, disk management, loading and execution, booting of the device, process management, data security and privacy, external device control, as well as providing a good user interface (UI). The most well-known computer operating systems are Microsoft's Windows and Apple's MacOS, alongside mobile phone operating systems like Google's Android and Apple's iOS.