1. Introduzione
Thank you for choosing the Casio fx-300MS Plus 2nd Edition Scientific Calculator. This calculator is designed to support a wide range of mathematical and scientific calculations, making it an ideal tool for students from middle school through high school, as well as for general use.
Its sleek design features a dual-line, 10-digit LCD display that allows for simultaneous viewing of expressions and results, reducing input errors and enhancing the learning experience. The calculator includes a protective case for safe storage and transportation, and operates on both solar power and battery backup for reliable performance.
Funzioni chjave:
- Clear 2-Line Display: Dual-line, 10-digit LCD for simultaneous expression and result viewing.
- Funzioni scientifiche: Covers trigonometric, inverse/hyperbolic functions, factorials, logarithms, and probability simulations.
- Calculi statistici: Supports two-variable statistics, standard deviation, and regression analysis.
- Fraction & Variable Memory: Easy conversion between improper fractions, mixed numbers, and decimals; stores up to 9 variables.
- Disegnu durable: Includes a hard protective case and ergonomic layout.
- Doppia fonte di energia: Solar-power with battery back-up (1 LR44 battery included).

2. Setup
2.1 Installazione di batterie
The calculator comes with one LR44 battery pre-installed, which serves as a backup power source. The primary power source is solar. If the display becomes dim or unresponsive in sufficient light, the battery may need replacement.
- Assicuratevi chì a calculatrice sia spenta.
- Truvate u coperchiu di u compartimentu di a batteria nant'à u spinu di a calculatrice.
- Using a small screwdriver, carefully remove the screw(s) securing the cover.
- Remove the cover and replace the old LR44 battery with a new one, ensuring correct polarity (+/-).
- Rimpiazzate u coperchiu di u compartimentu di a batteria è fissatelu cù a(e) vite(i).
2.2 Power-On iniziale
Per accende a calculatrice, appughjà u buttone [ON] button. The calculator will display '0' on the screen. If the display is blank, ensure there is sufficient light for the solar panel or check the battery installation.

3. Operating Instructions
This section provides a guide to the various functions and operations of your Casio fx-300MS Plus 2nd Edition Scientific Calculator.
3.1 Calculi di basa
Enter numbers using the numeric keypad and perform operations using the [+], [-], [×], è [÷] i buttoni. Press [=] per vede u risultatu.
3.2 Funzioni scientifiche
The calculator offers a wide array of scientific functions. Many functions are accessed by pressing the [SHIFT] key followed by the desired function key (indicated in yellow above the keys).
- Funzioni trigonometriche: Aduprà peccatu, [cos], abbronzatura for sine, cosine, and tangent. Inverse functions (sin⁻¹, cos⁻¹, abbronzatura⁻¹) are accessed via [SHIFT].
- Logaritmi: Aduprà [log] for base-10 logarithm and [ln] for natural logarithm.
- Putere è radiche: Aduprà [x²] for square, [√] for square root, [x³] for cube, and [³√] for cube root. General powers ([^]) and roots ([SHIFT] [^]) are also available.
- Factorials: Aduprà [x!] (accessed via [SHIFT]) for factorial calculations.
3.3 Fraction Calculations
The dedicated fraction key [ab/c] allows for easy entry and calculation of fractions and mixed numbers. Use [SHIFT] [a b/c] to convert between improper fractions, mixed numbers, and decimal equivalents.
3.4 Calculi statistici
To enter Statistics Mode, press [MODE] and select the appropriate statistical option (e.g., SD for standard deviation, REG for regression). Follow the on-screen prompts to input data and perform calculations.
3.5 Variable Memory
The calculator can store up to 9 variables (A-F, X, Y, M). To store a value, enter the number, press [STO], and then press the alpha key corresponding to the desired variable (e.g., [ALPHA] [A]). Per richiamà un valore, appughjà [RCL] and the variable key.



3.6 Modi è Impostazioni
Press u [MODE] button to cycle through different calculation modes (e.g., COMP for basic arithmetic, STAT for statistics). The [ISTITUISCI] button (accessed via [SHIFT] [MODE]) allows you to configure display settings, angle units (degrees, radians, grads), and number formats.
3.7 Spegnimentu
Per spegne a calculatrice, appughjà [SHIFT] seguita da [AC] (OFF).
3.8 Product Overview Video
4. Mantenimentu
4.1 Pulizia
To clean the calculator, use a soft, dry cloth. For stubborn dirt, lightly dampen the cloth with water and a mild detergent, then wipe dry. Avoid using strong solvents or abrasive cleaners, as these can damage the calculator's surface or display.
4.2 Storage
When not in use, store the calculator in its protective hard case to prevent scratches and damage. Keep it away from extreme temperatures, humidity, and direct sunlight. The solar panel requires light to function, but prolonged exposure to intense heat can be detrimental.
4.3 Sustituzione di batterie
If the display becomes dim or calculations are slow, even in good lighting, it may be time to replace the LR44 backup battery. Refer to section 2.1 for battery installation instructions.
5. Risoluzione di prublemi
- A visualizazione hè in biancu: Ensure the calculator is in sufficient light for the solar panel. If it remains blank, replace the LR44 backup battery.
- Risultati sbagliati: Check the current mode (e.g., degrees vs. radians for trigonometric functions). Press [SHIFT] [MODE] to access setup and adjust settings. Ensure correct input of numbers and operations.
- Calculator freezes: Press u [AC] button to clear the current calculation. If the issue persists, try removing and reinserting the battery to perform a hard reset.
- I buttoni ùn rispundenu micca: Ensure no debris is lodged under the keys. Clean the calculator as described in section 4.1.
6. Specificazioni
| Feature | Specificazione |
|---|---|
| Dimensioni di u produttu | 3.2 x 0.75 x 6.25 inch |
| Pesu di l'articulu | 6.4 once |
| Numeru di mudellu di l'articulu | FX-300MSPLUS2 |
| Batterie | 1 batteria LR44 necessaria (inclusa) |
| Tipu di calculatrice | Ingegneria / Scientifica |
| Fonte d'energia | Batteria / Solar |
| Size Screen | 3 inch |
| Culore | Neru |
7. Garanzia è Support
For warranty information and customer support, please refer to the documentation included with your product packaging or visit the official Casio websitu. Conservate a vostra ricevuta d'acquistu cum'è prova d'acquistu per qualsiasi reclamu di garanzia.
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