Courtesy of Apple
Last August, Pushing the Envelope ran a topic on e-readers — devices designed for portable book reading. Two weeks ago, Apple unveiled the iPad. The iPad offers multiple functionality including the ability to read books, surf the Internet, and use computer applications. Unlike most e-readers, the iPad does not have virtual ink technology, which is intended to mimic paper and make reading more pleasant, but it has one key difference from other widely-used e readers — a color display.