You know where the buttons are, you just know. If you didn’t, you probably be mauled down by zombies or shredded by a terror attack or overtaken by another extreme racer. Imagine how that spontaneity can help you with your calculations. Surely, the X-Cool Calculator knows that they joystick is something indispensable and it does a fairly good job to give you the exact feel of the same. It’s a calculator that has 27 functions (with memory function), an 8 digit LCD display, two handed operability that makes calculating easier and quicker and a long battery life (AG10 battery included).
Never dig a mathematician’s life-device. Especially at $13, there isn’t much you can hog up to calm the nerves of a crippling calculation.