Canon Business/Financial Calculator HS-1200TS Desktop Calculator offers a 12-digit, upright angled, liquid crystal display with large, easy-to-read numbers to provide you with maximum viewing comfort. Ergonomic angle of the display provides comfort and reduces eyestrain from overhead lighting. Display indicates the operation symbol (+, -, x, รท) during a calculation and will also show the equal sign (=) when your result is displayed. High-quality keys incorporate a "PC like" keyboard touch. Functions include tax calculation, business functions, cost/sell/margin keys, three-key memory, GT feature, percent, backspace, "00" key and sign change key, percentage add-on/discount, round off/up/down and square root. Solar and battery powered.