EROREX EX-991ES PLUS Scientific Calculator
The EROREX EX-991ES PLUS is a powerful scientific calculator designed for students, engineers, and professionals. It features a natural textbook display that shows mathematical expressions exactly as they appear in textbooks, making calculations easier to understand. With hundreds of built-in functions and a simple menu system, it is suitable for advanced mathematics, statistics, and engineering calculations.
Key Features
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417 built-in scientific functions
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Natural textbook display for clear equation viewing
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Two-line LCD display (expression and result)
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10 + 2 digit display capacity
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Advanced statistical and regression calculations
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Matrix and vector calculations
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Complex number calculations
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Equation solving and CALC/SOLVE functions
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Easy menu-based operation
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Durable and portable scientific calculator design
Specifications
| Feature | Details |
|---|---|
| Model | EX-991ES PLUS |
| Brand | EROREX |
| Calculator Type | Scientific Calculator |
| Display Type | Natural Textbook Dot Matrix LCD |
| Digit Capacity | 10 + 2 Digits |
| Number of Functions | 417 Functions |
| Display | 2-Line Display |
| Memory | Variable Memory |
| Power Source | Dual Power (Solar + LR44 Battery) |
| Key Type | Plastic Keys |
| Usage | School, College, Engineering Calculations |
| Design | Portable Scientific Calculator |
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