Anyone with an older Mac probably knows this icon: A boxy all-in-one computer with a simple smiling face on screen.
Like all good symbols, the Happy Mac serves multiple purposes. The official reason it exists is to tell you that your Macintosh has begun the process of booting up without error.
More than that, the Happy Mac was a symbol of intent from Apple: This computer is friendly. It doesn't have an impenetrable interface filled with text you don't understand. The Mac has pictures. And it's smiling at you!
Susan Kare was the graphic designer who created the Happy Mac. She spoke to us about the process behind that and many of the other icons that made the original Macintosh so different to any computer before it.