1979 Apple Graphics Tablet vs. 2010 Apple iPad

PCWorld: "Apple's release of the iPad was the culmination of fans' long wait for a tablet. But in 1979, an earlier generation of Apple users used a different kind of Apple tablet. The Apple Graphics Tablet was designed by Summagraphics and sold by Apple Computer for the Apple II. This tablet was not a standalone computing device like the iPad, but was an input device for creating images on the Apple II, and predated the Apple II's mouse by six years."