Nearly 2 million children worldwide already use the renowned XO laptop computer, according to its provider, the philanthropic organization One Laptop Per Child (OLPC). And now, with the help of no small amount of feedback from its users, OLPC has teamed up with integrated technology solutions developer Marvell to design the next generation of durable, low-cost computers for students in global regions underserved by technology: The sub-$100 XO tablet.