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Windows 7 is a custom operating system of the windows nt familyWindows 7 is a custom operating system of the Windows NT family
The logo of the windows operating system on a yellow and gray background with a blue stripeThe logo of the Windows operating system on a yellow and gray background with a blue stripe
The operating system is distinguished by its complexityThe operating system is distinguished by its complexity
Microsoft windows 8 operating system in a minimalist styleMicrosoft Windows 8 operating system in a minimalist style