1. Introducció i finalview
The Sharp EL520XTBBK is an advanced 2-line scientific calculator designed for a wide range of mathematical and scientific applications. It features a Direct Algebraic Logic (D.A.L.) display, allowing calculations to be entered and displayed in a natural, textbook-like format. This calculator is ideal for students and professionals in fields such as general math, science, pre-algebra, algebra I & II, geometry, trigonometry, statistics, biology, chemistry, and physics.
The calculator operates on a twin power system, utilizing both solar energy and battery backup to ensure reliable performance. It comes with a durable, gloss black finish with white accents and includes a protective hard case for portability and protection.
Figura 1.1: Frontal view of the Sharp EL520XTBBK Scientific Calculator.
2. Setup and Power
2.1 Font d'alimentació
The EL520XTBBK calculator is equipped with a dual power system: solar power and battery backup. The solar panel, located at the top of the calculator, provides power in well-lit environments. In low-light conditions or when solar power is insufficient, the calculator automatically switches to battery power. No user intervention is required for power source selection.
2.2 Encesa/apagada
- Per engegar la calculadora, premeu la tecla ON/C botó.
- To turn off the calculator, press the 2n F botó seguit del botó OFF button (which is typically the same as ON/C, indicated by an orange 'OFF' label above it). The calculator also features an auto-power-off function to conserve battery life after a period of inactivity.
3. Instruccions de funcionament
3.1 Lògica algebraica directa (DAL)
The D.A.L. system allows you to input equations exactly as they are written, simplifying complex calculations. For example, calcular sin(30), premeries pecat, doncs 30, i després =. The calculator displays the expression as you enter it, making it easy to verify your input.
3.2 Basic Arithmetic and Scientific Functions
Perform standard operations using the number keys (0-9), decimal point (.), and operators (+, -, ×, ÷). El = key executes the calculation.
Access scientific functions such as trigonometric (pecat, cos, bronzejat, bombo), logarithmic (registre, ln), and exponential (Exp, 10x, ex) functions directly or by using the 2n F key for secondary functions. The x2, x3, √, i yx keys are available for powers and roots.
3.3 Statistical Calculations
The calculator supports 1-variable and 2-variable statistical calculations. To enter statistical mode, press MODE and select the appropriate statistical option. Data entry and calculation of mean, standard deviation, and other statistical values are performed using dedicated statistical keys and menus.
3.4 Equation Solvers
The EL520XTBBK includes a 3-variable linear equation solver. Refer to the detailed manual for specific steps on how to input coefficients and solve systems of linear equations.
3.5 Funcions de memòria
The calculator features 8 temporary memory buttons and 4 formula memory buttons. Use STO to store values into memory and RCL to recall them. The M+ i M- keys allow for direct addition or subtraction to the independent memory.
3.6 Physical Constants and Metric Conversions
Access a library of built-in physical constants and perform various metric conversions using the dedicated functions. Consult the full user manual for a complete list of available constants and conversion types.
3.7 Demonstration of Features (Similar Model)
Video 3.7.1: This video demonstrates features such as WriteView display, definable memory keys, and quick fraction/decimal conversion on a similar Sharp scientific calculator model (EL-W535TGBBL). While the model differs, the core functionalities are analogous to the EL520XTBBK.
4. Manteniment
4.1 Neteja
To clean the calculator, use a soft, dry cloth. Do not use abrasive cleaners, solvents, or alcohol, as these can damage the casing or display. Avoid getting moisture into any openings.
4.2 Emmagatzematge
When not in use, store the calculator in its protective hard case to prevent scratches and damage to the display and keys. Avoid exposing the calculator to extreme temperatures, humidity, or direct sunlight for prolonged periods.
5. Solució De Problemes
5.1 Problemes de visualització
- Pantalla en blanc: Ensure the calculator is in a well-lit area for solar power or that the battery is not depleted. Press ON/C per encendre-lo.
- Visualització feble: Adjust the contrast setting if available (refer to the full manual for specific instructions). Ensure adequate lighting for solar charging.
5.2 Incorrect Calculations
- Check Input: Verify that the numbers and operations were entered correctly using the D.A.L. display.
- Configuració del mode: Ensure the calculator is in the correct mode (e.g., DEG, RAD, STAT) for your calculation. Press MODE to cycle through or select modes.
- Restablir: If calculations remain incorrect, a full reset may be necessary. Locate the RESET button (often a small recessed button requiring a thin object like a paperclip) and press it. Note that this will clear all memory and settings.
6. Especificacions
| Característica | Especificació |
|---|---|
| Model | EL520XTBBK |
| Tipus de visualització | LCD de 2 línies |
| Nombre de dígits | 10 dígits |
| Font d'alimentació | Alimentació solar amb bateria de seguretat |
| Tipus de calculadora | Scientific / Engineering |
| Tipus de material | Cautxú |
| Color | Negre |
| Dimensions (A x A x P) | 3-5⁄16" x 5-5⁄16" x 5⁄8" (approx. 8.4 x 13.5 x 1.6 cm) |
| Pes | 160 g |
7. Garantia i Suport
For warranty information, technical support, or service inquiries, please refer to the documentation included with your product at the time of purchase or visit the official Sharp Electronics weblloc web. Conserveu el comprovant de compra per a reclamacions de garantia.