Casio | fx-991ZA PLUS II | 452-Function Scientific Calculator

Advanced scientific calculator for mathematics and engineering

The Casio fx-991ZA PLUS II is a non-programmable scientific calculator for advanced school, university, engineering, and technical calculations. Its Natural Textbook Display presents expressions in a familiar textbook-style format, while a wide range of dedicated modes covers algebra, calculus, statistics, matrices, vectors, complex numbers, and more.

Key features

• 452 built-in scientific functions
• Natural Textbook Display
• Dual power from a built-in solar cell and LR44 battery
• Remainder, prime factorisation, GCD, LCM, inequality, and ratio calculations
• Integration, differentiation, sigma, CALC, and SOLVE functions
• Complex number, statistics, normal distribution, Base-n, equation, matrix, vector, table, and distribution modes
• Scientific constants and metric conversion functions
• Non-programmable design

Specifications

• Brand: Casio
• Model: fx-991ZA PLUS II
• Type: Non-programmable scientific calculator
• Functions: 452
• Display: Natural Textbook Display
• Power: Built-in solar cell and 1 × LR44 (GPA76) button battery
• Approximate battery life: 3 years based on one hour of operation per day
• Operating temperature: 0 °C to 40 °C
• Dimensions: 11.1 × 77 × 161.5 mm
• Approximate weight: 95 g including battery

Specifications are based on Casio's official South African product information and support documentation.