You Won't Believe How Much Graphing Calculators Have Changed

Twenty-seven years after introducing the world's first graphing calculator, Casio has developed its most sophisticated educational Game Boy ever. Indeed, the new Casio fx-CP400's 320 x 528 resolution screen isn't just color—it's a freaking touchscreen that flips from vertical to horizontal. That's a far cry from the… » 11/29/12 11:00am 11/29/12 11:00am