Twenty-five years ago, on Nov. 20, 1985, Microsoft introduced its first version of Windows to the world. Not many people outside the technical press or the tech industry took notice. Product launch events that cost hundreds of millions of dollars were still years away.
What's changed in Windows in the last 25 years? Plenty. In this image gallery, we take a look at the various faces of Windows over the past couple of decades and clue you in to what happened at every stage of the operating system's development.
1985: Windows 1.0