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Operating systems

An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes a system call to an OS function or be interrupted by it. Operating systems can be found on many devices that contain a computer—from cellular phones and video game consoles to supercomputers and web servers. Examples of popular modern operating systems include Android, BSD, iOS, Linux, OS X, QNX, Microsoft Windows, Windows Phone, and IBM z/OS. All these examples, except Windows, Windows Phone and z/OS, share roots in UNIX.

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link to VESA

VESA

VESA (), or the Video Electronics Standards Association, is an international non-profit corporation standards body for computer graphics formed in 1988 by NEC Home Electronics, maker of the MultiSync...

link to FreeSync

FreeSync

FreeSync (Dynamic refresh rate (DRR)) is an adaptive sync technology initially developed by AMD in response to NVidia's G-Sync for LCD displays that reduces screen tearing. As of 2015, VESA has...