System software can be classified as operating system. An operating system creates an interface between other software and the system hardware, while system software will refine or allow greater interaction with the user.
System software helps use the operating system and computer system. It includes diagnostic tools, compilers, servers, windowing systems, utilities, language translator, data communication programs, data management programs and more. The purpose of systems software is to insulate the applications programmer as much as possible from the details of the particular computer complex being used, especially memory and other hardware features, and such accessory devices as communications, printers, readers, displays, keyboards, etc.
Specific kinds of system software include:
* Loading
* Linkers
* Utility software
* Desktop environment / Graphical user interface
* Shell
* BIOS
* Hypervisors
* Bootloaders
If system software is stored on non-volatile memory such as integrated circuits, it is usually termed firmware.
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