Ergonomic Scientific Calculator performs 131 scientific and math functions. Ideal for students studying general math, pre-algebra, algebra, and trigonometry. Large, easy-to-read liquid crystal display (LCD) accommodates 10 digits on one line. Functions include one memory, five parenthesis levels, log and inverse, percent, complex numbers, standard logic, trigonometry functions, statistics functions (one variable, X mean standard deviation, factorial) and last-digit correction. Protective hardcover offers protection from scratches. Battery-powered calculator automatically powers down when not in use.