Casio's touchscreen graphing calculator arrives in 2013

Everything's a battleground these days, isn't it? Even the makers of humble graphing calculators can't resist a scrap. Casio is now throwing down the gauntlet, announcing that its fx-CP400 will arrive shortly after rival TI's color-screened TI-84+. Casio's offering comes with a 4.8-inch, 320 x 528, stylus-driven display and can switch from vertical to horizontal modes at the touch of a button. If you're planning on some illicit classroom movie-watching, however, then you should know it only has around 30MB of storage -- but hey, that might be good enough for one thing.