AT&T UNIX PC computer

1600 × 1200

Apple logo with penguin and other icons

1024 × 768

Windows and Ubuntu logos with meters

1280 × 1024

Univac 494 computer console

1600 × 1200

Windows XP Professional desktop

960 × 744

IBM data processing tape

1600 × 1200

IBM data processing tape

1920 × 1200

Windows Operating Systems — Blue

1600 × 1000

Dennis Ritchie word art portrait

2560 × 1600

Unix logo with tagline

1280 × 800

Linux Distribution Timeline

2980 × 2105

Windows Operating Systems

2576 × 1618