1. Introducere
The Sharp EL-531WHBK is a scientific calculator designed for a wide range of mathematical and scientific calculations. It features a 10+2 digit, 2-line LCD display and offers 272 functions, including statistical calculations, fraction calculations, and algebraic formula notation. This manual provides detailed instructions for the proper use and maintenance of your calculator.
Figura 1: Față view of the Sharp EL-531WHBK Scientific Calculator.
2. Măsuri de siguranță
- Do not expose the calculator to direct sunlight, high temperatures, or high humidity.
- Evitați să scăpați calculatorul sau să îl supuneți la impacturi puternice.
- Do not attempt to disassemble or modify the calculator.
- Țineți calculatorul departe de apă și alte lichide.
- Use only the specified battery type for replacement.
- Aruncați bateriile uzate conform reglementărilor locale.
3. Configurare
3.1 Instalarea bateriei
The Sharp EL-531WHBK calculator is powered by two LR44 batteries, which are included. To install or replace batteries:
- Ensure the calculator is turned OFF.
- Localizați capacul compartimentului bateriilor de pe spatele calculatorului.
- Folosind o șurubelniță mică, scoateți cu grijă șurubul care fixează capacul.
- Remove the cover and insert the two LR44 batteries, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Puneți la loc capacul compartimentului bateriei și fixați-l cu șurubul.
Nota: The calculator also features solar power for extended battery life in well-lit conditions.
3.2 Pornirea inițială
După instalarea bateriei, apăsați butonul ON/C key to turn on the calculator. The display should show "0" or a similar initial state. If the display is blank or shows unusual characters, recheck battery installation or replace with new batteries.
4. Instrucțiuni de utilizare
This section outlines the various functions and operations of the EL-531WHBK calculator.
Figure 2: Operating the Sharp EL-531WHBK Scientific Calculator.
4.1 Operații aritmetice de bază
Enter numbers using the numeric keypad. Use the +, -, ×, și ÷ keys for addition, subtraction, multiplication, and division, respectively. Press = pentru a afișa rezultatul.
- Examppe: To calculate 15 + 7: Press 1 5 + 7 =. Result: 22.
4.2 Funcții științifice
The calculator provides a wide array of scientific functions. Many functions require pressing the 2ndF key first to access secondary functions printed above the keys.
- Funcții trigonometrice: Utilizare păcat, cos, bronzat. For inverse functions (sin⁻¹, cos⁻¹, tan⁻¹), press 2ndF then the respective trigonometric key.
- Funcții logaritmice: Utilizare jurnal (baza 10) și ln (logaritm natural).
- Puteri și rădăcini: Utilizare x² for squaring, √ for square root. For other powers (xʸ) or roots (ʸ√x), use the yˣ or ʸ√x funcții.
- Fracții: Utilizați ab/c key for fraction input and conversion.
4.3 Funcții de memorie
The calculator has independent memory (M) and seven variable memories (A-F, X, Y).
- M+: Adaugă valoarea afișată în memoria independentă.
- M-: Scade valoarea afișată din memoria independentă.
- RCL: Reapelează valoarea din memorie.
- STO: Stores the displayed value into a variable memory. Press STO then the desired variable key (e.g., A).
4.4 Calcule statistice
Pentru a intra în modul statistic, apăsați MOD then select the appropriate statistical mode (e.g., STAT). Input data using the CD de date key. The calculator can perform various statistical calculations, including mean, standard deviation, and regression analysis.
4.5 Angle Unit Modes
The calculator supports three angle unit modes: Degrees (DEG), Radians (RAD), and Gradians (GRAD). Press the DRG key repeatedly to cycle through these modes. The current mode is indicated on the display.
5. Întreținere
5.1 Curățare
To clean the calculator, wipe it gently with a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray directly onto the calculator.
5.2 Depozitare
When not in use for extended periods, store the calculator in its protective hard case in a cool, dry place, away from direct sunlight and extreme temperatures.
5.3 Înlocuirea bateriei
If the display becomes dim or calculations are erratic, it may be time to replace the batteries. Refer to section 3.1 for battery installation instructions. The calculator uses two LR44 batteries.
6. Depanare
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Calculatorul nu pornește. | Baterii descărcate sau instalate incorect. | Check battery polarity or replace batteries (LR44). |
| Afișajul este întunecat sau pâlpâie. | Putere scăzută a bateriei. | Replace batteries. Ensure adequate lighting for solar power. |
| Mesajul „EROARE” afișat. | Invalid operation (e.g., division by zero, mathematical overflow). | Presa ON/C to clear the error and re-enter the calculation. Review the operation for mathematical validity. |
| Rezultate incorecte ale calculelor. | Incorrect mode setting (e.g., angle unit), input error. | Check the angle unit (DEG/RAD/GRAD). Verify input sequence. Reset calculator if necessary (refer to manual for reset procedure, usually involves a small reset button or specific key combination). |
7. Specificații
Figure 3: Dimensions of the Sharp EL-531WHBK Scientific Calculator.
| Caracteristică | Detaliu |
|---|---|
| Model | EL-531WHBK |
| Afişa | 10+2 digit, 2-line LCD |
| Funcții | 272 functii |
| Sursa de alimentare | Battery (2 x LR44), Solar Powered |
| Dimensiuni (L x l x H) | 15.45 x 7.96 x 1.82 cm (6.08 x 3.13 x 0.72 țoli) |
| Greutate | 110 g (0.24 lbs) |
| Intrare interfață umană | Butoane |
| Tip material | Cauciuc, silicon |
8. Garanție și asistență
Sharp products are manufactured to high quality standards. For warranty information and technical support, please refer to the warranty card included with your product or visit the official Sharp support website-ul.
For further assistance, you may contact Sharp customer service or visit their official website:
- Sharp Official Website: www.sharp.ca
- Sharp Store on Amazon: Sharp Electronics of Canada Ltd. Store
