An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. The operating system is a component of the system software in a computer system.Application programs usually require an operating system to function.xamples of popular modern operating systems include Android, BlackBerry, BSD, Chrome OS, iOS, Linux, OS X, QNX, Steam OS, Microsoft Windows (and variant Windows Phone), and z/OS.
The aura is an electromagnetic field that surrounds every creature that exists. A form of energy emanating from your body, your aura can tell a lot about you, from your personality to your innermost emotions and conflicts.
Migraine with aura (classic migraine): This type is usually preceded by an aura and is usually much worse than a common migraine. Most often, an aura is a visual disturbance (outlines of lights or jagged light images). Status migrainosus: This is the term used to describe a long-lasting migraine that does not go away by itself.