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.
The aura may be a pulsing star of light, or a dance of geometric forms across the visual field â¦ â Natalie Angier. 2 : an episode or attack of migraine Most patients use a class of drugs known as âtriptans,â to relieve occasional migraines. But triptans don't work for 20% to 30% of patients. â Tara Parker-Pope.