Digits - WSJ: "Any startup going up against both Apple and Amazon.com is going to face tough questions. Kno thinks its unusual tablet computer answers them all. [The Silicon Valley company's] hardware ... is tailored for a specific purpose–letting students read and annotate electronic versions of textbooks. Among its distinguishing features is a larger screen than the iPad–nearly 14 inches diagonally, versus about 10 inches for Apple’s hit device–and the option to double that with a two-screen model that can be held vertically, like an open book. ... "
