Scientific calculator features a 10-digit, two-line display that shows the problem as you write it, and then shows the answer alongside for easier calculations. If you make an error, you can quickly clear it with the backspace key. 240 built-in mathematical functions simplify complex problems for quick use. Calculator provides one independent and nine constant memory keys. Solar-powered operation with a battery backup ensures consistent use in any setting. Protective hard case keeps the calculator safe from damage between uses.