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
Image of the operating system with pictures of natureImage of the operating system with pictures of nature
Yellow-orange logo of the linux ubuntu operating systemYellow-orange logo of the Linux Ubuntu operating system
Night operation on may 17, 1943 at the dam art drawingNight operation on May 17, 1943 at the dam art drawing