Fx-991EX model

The Casio fx-991EX ClassWiz is one of the most advanced non-programmable scientific calculators designed for students and professionals in engineering, mathematics, and science. It features a powerful processor, high-resolution display, and over 552 built-in functions, making it significantly more capable than older models like fx-991ES or fx-991MS.

Its Natural Textbook Display allows users to input and view equations exactly as they appear in textbooks, improving understanding and reducing errors.

The calculator also includes modern features such as QR code generation, enabling users to visualize graphs and data on smartphones—something not available in previous models.