All Reviews, Scientific Calculator
Casio FX-991EX Product Review

Casio FX-991EX Now available in Bangladesh

Want to upgrade your Scientific Calculator that has more functions and faster processor or If you are planning to buy a new Scientific Calculator in Bangladesh then you should read this review and it will help you to make your decision wisely. Here is the product review for Casio FX- 991EX CLASSICWIZ Scientific Calculator and with my honest Opinion for you.

This Latest Scientific Calculator from Casio has few unique and powerful computing power for Engineering calculations. It gives more functions and durability. Here we will discuss this latest calculator which is specially designed and improved for the Engineering students.

Casio FX-991EX

Casio FX-991EX calculator is a latest scientific calculator manufactured by Casio Company. Launched at the end of 2015, the calculator is endowed with more additional functionalities and intuitive features unlike the previous versions of calculators made by the same company. The high-performance calculator features a high-resolution LCD technology which enables it to increase the amount of information displayed and makes it easier for a user to view any numerical variables or symbols.

Here is at a glance what is new on this Scientific Calculator-

  • More functions- 552 functions
  • High-resolution LCD
  • High-speed calculation
  • QR code Generation
  • Visualization with graphs & supports excels sheets

However, a unique feature of the Scientific calculator is the additional spreadsheet functionality which enables it to be used for data analysis and statistical calculations and presentation of data. Moreover, it has a high performance which hastens the calculation speed when performing advanced mathematical calculations.
This makes it ideal to be used by both students and professionals in various fields.

Fx-991EX Product Overview

  • Display feature

The display of Casio FX-991EX has been highly improved to make it more user-friendly. The display features an easy-to-use menu which has various icons for various functions. A user can easily and accurately select any functions to be used. The icons are also outlined systematically for better visualization of the functions on the menu bars.
The display also features both linear and textbook input/ output calculation mode for better usability. This makes it easier for the user to choose the best method which is appropriate for him. Textbook display is essentially easier for use by beginners because the symbols and formulas are displayed in a mode comparable to textbooks. Advanced and more experienced users can use the linear input/ output display function which has more advanced functions and formulas.

Casio Fx-991EX
Variables which have been stored in the memory of Casio FX-991EX can be easily retrieved and displayed on the screen in lists. Thus, frequently used complex formulas and statistical calculation can be easily retrieved to hasten calculations
The display has also been enhanced to make it more user-friendly through the use of English words on the screen for easier selection and manipulation of the in formulas, functions, and input data.
The presence of the online visualization services which uses QR code enables Casio FX-991EX calculator to display any graphical data or statistical regression models which are presented in linear, logarithmic, quadratic or exponential power, on wider screens such as on projectors, mobile devices or PCs. This is important for use in a classroom where the instructor can enhance the display of graphical models from the calculator to a projected screen for the students or by professionals who can enhance any graphical data for better presentation to others in meeting or conferences.

  • Mathematical Features

Basic calculations can be efficiently solved. Casio FX-991EX has additional basic operations which include Octal, Binary, Decimal and Hexadecimal operations. The binary mode enables a 32-bit display.
Advanced and complex calculation can also be solved by the calculator. They include all calculus functions (derivatives, integrals, and summation), complex numbers, simultaneous equations with for unknowns, quartic equations and also the use of 4 x 4 matrix calculations. Advanced statistical distributions calculation can also be easily solved.


FX-991EX Scientific Calculator Specifications

  • Casio FX-991EX dimensions (H x D x W) 11.1 x 77 x 165.5
  • Weight- 90grams
  • A high-performance processor which speeds the time used for calculations especially for advanced and complex calculations.
  • The screen has a high pixel resolution of 192 x 63. This makes the presentation of information easier for visualization.
  • Input keys are made from plastic making its operations easier. They are also more durable.
  • Casio FX-991EX has 10-digit mantissa + 2-digit exponent (10+2 Digit) display for faster use. It also has 15 internal operation digits
  • It can be powered either using a battery (LR44) which has a two-year shelf-life or using solar energy
  • The total number of functions used is 274
  • It also has the ability of a screen capture

Casio Fx-991ex


  • Utilization of high-resolution LCD technology makes it easier for use in advanced mathematics.
  • The QR code features enables the calculator’s graphical models to be projected on larger screens for better display and also to be used for online purposes.
  • It can be powered using battery power and solar energy making it more flexible


Potential Drawback


  • The scientific functions are a bit cluttered and a user could have a hard time finding the functions he wants to use.
  • The interface may not be interactive for a first-time user.

Casio FX-991EX is an excellent calculator which has excellent functionalities and it’s very intuitive for use by both students and professionals who work with various mathematical models. The price is affordable according to its unique features and high-performances functionalities.

Interested to buy the Original one? Here you will find it Casio ClassWiz Calculator in Bangladesh online and get home or office delivery.

Casio Fx-991ex Calculator

Casio Fx-991ex Calculator








        • High-resolution LCD
        • QR code features
        • More functions- 552 functions


        • user could have a hard time finding the functions
        • The interface may not be interactive for a first-time user.

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