Battery
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11 Answers 22 Score |
Not working. No display. Better also changed. what should I do? |
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2 Answers 11 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
Additional Information
Casio Office, School & Household Equipment and Electronic Calculators General Catalogue 2006–2007
fx-ES and fx-ES PLUS Standard Models Specifications Comparison
Casio fx-570ES PLUS / fx-991ES PLUS / fx-9910NG PLUS (2nd Edition) User’s Guide
fx-115ES/fx-991ES User's Guide
fx-115ES/fx-991ES Guía del usuario
Casio fx-570ES PLUS and fx-991ES PLUS User's Guide
