Casio fx-991MS-2 Scientific Calculator with Solar Power

The Casio fx-991MS-2 Scientific Calculator helps you solve everything from basic fractions to equations, matrices, vectors and complex numbers on one device. It is built for students and professionals who want a dependable scientific calculator for daily study and work.

Its solar and battery power supply keeps it ready during long study sessions, and Auto Power Off helps save energy. The battery lasts about 3 years, and the slide-on hard case protects it in your bag. At 95 g and 161.5 × 77 × 11.1 mm, it is easy to carry to class, exams or the office.

If you are looking for a trusted Casio calculator in Bangladesh, the fx-991MS-2 covers statistics, integration and differential calculations, base-n conversions and 40 scientific constants. It is non-programmable and non-graphing, so it is a straightforward tool for school, college and engineering work.

Key Features

• Fraction calculations: Enter and solve fractions directly. This saves time on algebra and everyday math problems.

• Combination and permutation: Handle probability and counting problems quickly without manual formulas.

• Statistics (STAT data editor, standard deviation, regression analysis): Enter data sets and run statistical calculations on the device, which is useful for exams and lab work.

• Equation calculations: Solve equations directly on the calculator and check your homework answers faster.

• Integration and differential calculations: Work through calculus problems without switching to another tool.

• Base-n calculations and conversions: Convert between number bases, which is handy for computer science and electronics students.

• Complex number, matrix and vector calculations: Cover advanced math topics on one device, so you do not need to buy a separate calculator as your courses progress.

• 40 scientific constants: Recall common constants instantly instead of looking them up, which helps in physics and chemistry.

• 9 variable memories, independent memory (M / M+ / M-) and answer memory: Store and reuse values across multi-step problems, so you make fewer re-entry mistakes.

• 10 + 2 digit dot matrix display with S-V.P.A.M.: View expressions and results clearly, which makes it easier to spot input errors before you press equals.

• Fast-typing function (2-key rollover): Key presses register smoothly even when you type quickly.

• Solar and battery power with Auto Power Off: The calculator stays ready for long sessions and saves power when idle, with a main battery life of about 3 years.

• Memory protection and reset function: Stored data stays protected, and you can reset the calculator when you need a clean start.

• Slide-on hard case: The keys and display stay protected in your bag.

Why Choose the Casio fx-991MS-2 Scientific Calculator

Students often need one calculator that works from school math through university coursework. The fx-991MS-2 adds equation, calculus, complex number, matrix and vector functions on top of the core fraction and statistics tools, so it stays useful as your studies get harder.

Dual power (solar plus battery) means you are rarely caught with a dead calculator, and the 3-year battery life keeps upkeep low. The hard case and 95 g weight make it easy to carry every day.

Shoppers searching for a Casio calculator usually want a dependable, well-known brand with broad function coverage. This model gives you that in a simple non-programmable design, which is a practical choice for everyday classroom use.

Best Use Cases

• School and college students: Algebra, statistics, probability and general science homework.

• Engineering and science students: Matrix, vector, complex number and base-n calculations.

• Professionals: Quick technical calculations at the office or on site.

Technical Specifications