Manual d'usuari de la calculadora científica Casio FX-991CEX CLASSWIZ

Introducció

This manual provides detailed instructions for the proper use and maintenance of your Casio FX-991CEX CLASSWIZ scientific calculator. Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.

Un front view of the Casio FX-991CEX CLASSWIZ scientific calculator, displaying its screen, solar panel, and full keypad with various function buttons.

1. Configuració

1.1 Encès

The Casio FX-991CEX CLASSWIZ calculator is primarily powered by a solar cell, with a button battery (LR44) providing backup power for memory retention and operation in low light conditions. Ensure sufficient light is available for the solar cell to operate. Press the ON button to turn on the calculator.

1.2 Configuració inicial

Upon first use or after a reset, you may need to configure initial settings. Press [MAJÚS] aleshores [MENU SETUP] to access the setup menu. Use the arrow keys to navigate and select options such as input/output format, angle unit, and display format.

• Entrada/sortida: Select MathI/MathO for natural display or LineI/LineO for linear display.
• Angle Unit: Choose between Degree, Radian, or Gradian.
• Format de visualització: Configure number of decimal places or significant figures.

2. Instruccions de funcionament

2.1 Càlculs bàsics

Enter numbers and operations using the keypad. Press [=] to obtain the result. For exampper calcular 5 + 3, premeu [5] [+] [3] [=].

2.2 Function Modes

The calculator offers various modes for different types of calculations. Press [MENÚ] to access the mode selection screen. Common modes include:

1. Calculate (COMP): For general arithmetic and function calculations.
2. Complex: For complex number calculations.
3. Base-N: For binary, octal, decimal, and hexadecimal calculations.
4. Matriu: For matrix calculations.
5. Vector: For vector calculations.
6. Statistics (STAT): For statistical calculations.
7. Taula: To generate a number table for a function.
8. Equation/Func: For solving equations and inequalities.

2.3 Using Secondary Functions

Many keys have secondary functions printed above them. To access these, press the [MAJÚS] key (yellow) followed by the desired function key. For alpha characters and variables, press the [ALFA] key (red) followed by the corresponding key.

2.4 Funcions de memòria

The calculator includes independent memory (M) and variable memories (A, B, C, D, E, F, X, Y). To store a value, enter the value, press [STO], then press the desired memory key. To recall a value, press [RCL], then the desired memory key.

3. Manteniment

3.1 Neteja

Wipe the calculator gently with a soft, dry cloth. Do not use abrasive cleaners, solvents, or wet cloths, as these can damage the surface or internal components.

3.2 Emmagatzematge

Store the calculator in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. Keep it away from strong magnetic fields.

3.3 Cura dels panells solars

Ensure the solar panel is not obstructed during use to maintain optimal power supply. Keep the solar panel clean and free from dust or debris.

4. Solució De Problemes

4.1 "Math ERROR" Displayed

This error indicates an invalid mathematical operation (e.g., division by zero, square root of a negative number). Review your input and correct any errors.

4.2 La pantalla està en blanc o tènue

• Ensure the calculator is in a well-lit area for the solar panel.
• If the issue persists, the internal button battery may be low. Contact Casio support for battery replacement information.

4.3 La calculadora no respon

Si la calculadora deixa de respondre, proveu de reiniciar-la. Localitzeu el RESET button (usually a small hole on the back or side) and gently press it with a thin, pointed object (like a straightened paper clip). Note that this will clear all memory and settings.

5. Especificacions

6. Garantia i Suport

Your Casio FX-991CEX CLASSWIZ calculator comes with a standard manufacturer's warranty. For specific warranty terms, service, or technical support, please refer to the official Casio website or contact your local Casio distributor.

Official Casio Support: www.casio.com/support