1. Introducció
This manual provides detailed instructions for the proper use and care of your Casio Fx-260 Solar Scientific Calculator. Designed for students and professionals, this calculator offers a wide range of scientific functions and a clear 12-digit LCD display, powered primarily by solar energy with battery backup.
Please read this manual thoroughly to ensure optimal performance and longevity of your device. Keep this manual for future reference.
2. Característiques clau
- Energia solar: Operates primarily on solar energy, with a backup battery for low-light conditions.
- Pantalla LCD de 12 dígits: Provides clear and easy-to-read numerical output.
- Funcions científiques: Includes trigonometric, logarithmic, exponential, and fraction calculations.
- Càlculs de fraccions: Supports direct input and calculation with fractions.
- Funcions de memòria: Store and recall values for complex calculations.
- Disseny durador: Built for everyday use in academic and professional environments.
3. Configuració
3.1 Font d'alimentació
The Casio Fx-260 Solar Scientific Calculator is designed to operate using solar power. For optimal performance, ensure the solar panel located at the top of the calculator is exposed to sufficient light. A lithium metal battery is included as a backup power source, automatically engaging in low-light conditions to maintain functionality.
3.2 Ús inicial
- Encès: Premeu el botó ON button to turn on the calculator. If the display does not appear, ensure the solar panel is exposed to light or check the battery.
- Esborra la pantalla: Premeu el botó AC (All Clear) button to clear any previous calculations or entries from the display.

Figura 1: Frontal view of the Casio Fx-260 Solar Scientific Calculator, showing the 12-digit LCD display, solar panel, and key layout. The ON and AC buttons are visible on the right side of the keypad.
4. Instruccions de funcionament
4.1 Operacions aritmètiques bàsiques
Perform standard calculations using the number keys and the +, -, ×, i ÷ operators. Press = per mostrar el resultat.
- Addició: 5 + 3 = (Result: 8)
- Resta: 10 - 4 = (Result: 6)
- Multiplicació: 6 × 7 = (Result: 42)
- Divisió: 20 ÷ 5 = (Result: 4)
4.2 Funcions científiques
The calculator provides various scientific functions accessible via dedicated keys or the MAJÚS clau.
- Funcions trigonomètriques (sin, cos, tan): Input the angle value, then press the desired function key. Ensure the correct angle unit (degrees, radians, grads) is set if applicable (this model typically defaults to degrees).
- Funcions logarítmiques (log, ln): Input the number, then press registre (base 10) o ln (logaritme natural).
- Potències i arrels: Utilitza el xy or ^ key for powers, and √ for square roots. For cube roots or higher, use the MAJÚS key with the appropriate function.
- Fraccions: Utilitza el ab/c key to input fractions. For example, to input 1/2, press 1 a b/c 2. To convert between mixed numbers and improper fractions, use SHIFT a b/c.
4.3 Funcions de memòria
The calculator includes memory functions to store and recall values.
- M+ (Memòria Plus): Afegeix el valor mostrat a la memòria independent.
- M- (menys de memòria): Resta el valor mostrat de la memòria independent.
- MR (recuperació de memòria): Recalls the value stored in the independent memory to the display.
- MC (esborrat de memòria): Clears the independent memory. (Often SHIFT MR or AC després MR).
5. Manteniment
- Neteja: Use a soft, dry cloth to clean the calculator's exterior. For stubborn dirt, slightly dampRenta el drap amb aigua. Evita fer servir productes químics agressius, dissolvents o netejadors abrasius.
- Emmagatzematge: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Protect it from dust and moisture.
- Bateria: The calculator uses a lithium metal battery as a backup. While solar power is the primary source, if the display becomes dim or unresponsive in sufficient light, the backup battery may need replacement. Consult a qualified technician for battery replacement to avoid damaging the device.
- Evitar l'impacte: Do not drop the calculator or subject it to strong impacts, as this can damage internal components or the display.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| La pantalla està en blanc o tènue. | Insufficient light for solar panel, or low backup battery. | Move the calculator to a brighter area. If the problem persists, the backup battery may need replacement by a service professional. |
| Resultats de càlcul incorrectes. | Incorrect input, incorrect mode setting, or previous calculation error. | Premeu AC to clear all entries and memory. Re-enter the calculation carefully. Ensure angle units are correct for trigonometric functions. |
| Les tecles no responen. | Calculator frozen, or physical damage. | Proveu de prémer AC. If unresponsive, ensure sufficient light. If still unresponsive, contact customer support. |
7. Especificacions
- Model: Fx-260 Solar II (CSOFX260SLRII)
- Visualització: LCD de 12 dígits
- Font d'alimentació: Solar Powered with Lithium Metal Battery backup (1 included)
- Dimensions: 7.64 x 5.31 x 0.04 polzades (dimensions del producte)
- Pes: 1.94 unces
- Tipus de calculadora: Scientific / Engineering
- Color: Negre
- Fabricant: CASIO
- Data de primera disponibilitat: 21 de febrer de 2021
8. Garantia i Suport
For information regarding warranty coverage, product support, or service, please refer to the warranty card included with your product or visit the official Casio website. Contact Casio customer service for assistance with any issues not covered in this manual.
Casio Oficial Weblloc: www.casio.com





