Casio C74
Manual del usuario de la calculadora científica Casio FX-82MS 2.ª edición
Model: FX-82MS (C74)
Introducción
This manual provides comprehensive instructions for the Casio FX-82MS 2nd Edition Scientific Calculator. It covers essential information regarding setup, operation, maintenance, and troubleshooting to ensure you get the most out of your device. The FX-82MS is designed for ease of use and high functionality, making it suitable for various educational and professional settings.

Figura 1: Frente view of the Casio FX-82MS 2nd Edition Scientific Calculator, showing its display and key layout.
Configuración
Instalación de la batería
The Casio FX-82MS 2nd Edition calculator requires one AA battery for operation. A battery is typically included with the purchase.
- Asegúrese de que la calculadora esté encendida APAGADO.
- Localice la tapa del compartimiento de la batería en la parte posterior de la calculadora.
- Deslice la cubierta en la dirección indicada por la flecha.
- Insert the AA battery, ensuring the positive (+) and negative (-) terminals are aligned correctly as shown inside the compartment.
- Vuelva a colocar la tapa del compartimiento de la batería, deslizándola firmemente hasta que encaje en su lugar.
Encendido inicial
Después de instalar la batería, presione el ON button located on the top right of the keypad to power on the calculator. The display should show "0" or a similar initial state.
Instrucciones de funcionamiento
The FX-82MS offers a wide range of functions for scientific and mathematical calculations. Familiarize yourself with the key layout and display.

Figura 2: Sobreview of key features including STAT-data editor, 240 functions, Dot Matrix display, stylish body with metallic keys, and 10+2 digits display.
Operaciones básicas
- Aritmética: Utilice el +, -, ×, ÷ keys for standard addition, subtraction, multiplication, and division.
- Es igual a: Presione el = key to execute a calculation.
- Claro: El AC key clears all calculations and memory. The DEL key deletes the last entered digit.
Funciones avanzadas
- Función de repetición múltiple: Allows you to scroll through and edit previously executed calculations. Use the arrow keys to navigate.
- Pantalla de 2 líneas: The calculator features a two-line display, showing the input expression on the upper line and the result on the lower line.
- Cálculos de fracciones: Utilice el abecedario key to input and perform calculations with fractions.
- Combinación y permutación: Access these functions using the nCr y nPr keys, typically requiring the CAMBIO llave.
- Statistics (STAT-data editor, Standard deviation, Regression analysis): Enter STAT mode to perform statistical calculations. Refer to the on-screen prompts or the detailed manual for specific procedures.
- Memorias variables: The calculator has 9 variable memories (A-F, X, Y, M). Use the STO key to store values and LCR to recall them.

Figure 3: The Casio FX-82MS calculator shown with its protective slide-on hard case, designed for portability and durability.
Mantenimiento
Limpieza
To clean the calculator, wipe it gently with a soft, dry cloth. Do not use abrasive cleaners, solvents, or alcohol, as these can damage the casing and keys.
Reemplazo de batería
When the display becomes dim or calculations are incorrect, it may be time to replace the battery. Follow the battery installation steps outlined in the "Setup" section. Dispose of used batteries according to local regulations.
Almacenamiento
Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided slide-on hard case to protect the calculator from dust and physical damage when not in use.
Solución de problemas
- La calculadora no se enciende:
- Compruebe si la batería está instalada correctamente con la polaridad correcta.
- Reemplace la batería por una nueva.
- La pantalla está oscura o en blanco:
- La batería puede estar baja. Reemplácela.
- Adjust the display contrast if applicable (refer to advanced settings if available, though this model typically has fixed contrast).
- Resultados de cálculo incorrectos:
- Ensure you are in the correct mode (e.g., COMP, STAT). Press MODO para cambiar de modo.
- Clear all memory and settings by performing a reset (consult the full manual for specific reset procedures, often involves CAMBIO + CLR).
- Verify the input values and order of operations.
- Las teclas no responden:
- Asegúrese de que no haya residuos alojados debajo de las teclas.
- If the issue persists, contact Casio support.
Presupuesto

Figure 4: The Casio FX-82MS calculator displayed next to a ruler, illustrating its compact dimensions.
| Característica | Detalle |
|---|---|
| Número de modelo | C74 (FX-82MS 2nd Edition) |
| Dimensiones del producto | 6.36 x 3.03 x 0.54 pulgadas |
| Peso del artículo | 3.7 onzas |
| Fuente de poder | Funciona con pilas (se requiere 1 pila AA, incluida) |
| Tipo de calculadora | Ingeniería/Científico |
| Tipo de pantalla | 2-line display, Dot Matrix |
| Tamaño de pantalla | 4 pulgadas (diagonal) |
| Numero de funciones | 240 funciones |
| Variables de memoria | 9 memorias variables |
| Color | Negro/Blanco |
| Fabricante | Casio |
Garantía y soporte
Información de garantía
Warranty terms and conditions for the Casio FX-82MS 2nd Edition Scientific Calculator are typically provided with your purchase. Please refer to the warranty card or documentation included in the product packaging for details regarding coverage period and claims procedures. Keep your proof of purchase for warranty validation.
Atención al cliente
For technical assistance, troubleshooting beyond this manual, or inquiries about replacement parts, please contact Casio customer support. You can usually find contact information on the official Casio website or through the support details provided with your product.
Visit the official Casio webSitio para obtener la información de soporte más actualizada: www.casio.com
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