Battery
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11 Answers 21 Score |
Not working. No display. Better also changed. what should I do? |
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2 Answers 10 Score |
How to repair the display |
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2 Answers 7 Score |
How do I fix my calculator that only runs on solar power? |
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3 Answers 4 Score |
Facing Problem on my calculator |
Documents
Tools
These are some common tools used to work on this device. You might not need every tool for every procedure.
Background and Identification
The FX-991ES is a scientific calculator from Casio. It has a built-in solar panel and a sliding plastic case to protect the face of the calculator when not in use.
Features
- Two way power
- 417 Functions
- Full Dot Display
- Plastic Keys
- Integration / Differential
- Equation calculation
- Matrix calculations / Vector calculations
- Complex number calculation
- CALC function / SOLVE function
- Base-n calculation
- Fraction calculation
- Combination and Permutation
- Logarithm log
- List-based STAT data editor
- Standard deviation
- Paired-variable statistics regression analysis
- Logical operations
- Table function
- 40 scientific constants
- 40 metric conversions (20 conversion pairs)
- 9 variable memories
