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| Name | OSALO Scientific Calculator for Students - OS-991EX CW |
| Category | Desk Calculator |
| Warranty Period | 12 Months |
| Country of Origin | China |
| Number Of Digit | 12 Digit |
| Model | OS-991EX |
| Power Type | Battery & Solar |
| Material | Plastic |
| Digit | 10 + 2 Digits |
| Title | OSALO Scientific Calculator for Students |
| Durability | Made with durable plastic to withstand regular usage |
| Display Features | 10 + 2 digit display allows for complex calculations and better precision |
| Power Efficiency | Dual power ensures operation in low-light conditions and extends battery life |
| Application | Suitable for students, particularly in scientific and engineering fields |
| Display | LCD Display |
| Conversion | 40 Metric |
| Equation Solver | Up to 4 |
| Display Type | Natural-V.P.A.M. |
| Company | ওসালো |
| Country | চায়না |
| Weight | 0.19 Kg |
The OSALO OS-991EX calculates 552 math functions through a 192 x 63 pixel display. Dual power circuits draw energy from solar cells or internal batteries. With 151 more functions than the OS-991MS, this version replaces the old 2-line screen with high-resolution icons for faster navigation.
Bangladesh education boards generally permit non-programmable scientific calculators for public examinations. This model lacks text-storage capabilities, meeting standard exam hall requirements.
This device contains 552 pre-programmed mathematical functions. It handles everything from basic arithmetic to 4x4 matrix equations and spreadsheet data.
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4.15
42 Ratings and 30 Reviews
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By 🙂, Jul 16, 2026
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