Indledning
This manual provides comprehensive instructions for the proper use and maintenance of your SHARP EL531XTWH Scientific Calculator. Designed for students and professionals, this calculator offers over 273 advanced scientific and mathematical functions, utilizing Direct Algebraic Logic (D.A.L.) for intuitive operation.
Figur 1: Forside view of the SHARP EL531XTWH Scientific Calculator, showcasing dens display og tastatur.
Key features include a large 12-digit, 2-line LCD display, 273 functions, two operational modes (Normal & Stat), 8 temporary memory buttons, and 1 & 2 variable statistics capabilities. Its durable design and twin power source (solar with battery backup) ensure reliable performance.
Opsætning
1. Batteriinstallation
The SHARP EL531XTWH calculator is twin-powered, operating on solar energy with a battery backup. A 1.5V LR44 battery is included. If the display becomes dim or unresponsive in low light, the battery may need replacement.
- Turn the calculator OFF.
- Find batterirummet på bagsiden af lommeregneren.
- Carefully open the battery cover using a small screwdriver or coin.
- Remove the old battery (if applicable) and insert a new LR44 battery, ensuring the correct polarity (+/-).
- Luk batteridækslet forsvarligt.
Figur 2: Tilbage view of the calculator, indicating the battery compartment location.
2. Initial Power On and Display Check
Tryk på ON/C key to turn on the calculator. The display should show "0." or "0.00" depending on the initial settings. If the display is blank or shows unusual characters, ensure the battery is correctly installed and try pressing the NULSTIL button (usually a small recessed button requiring a thin object like a paperclip).
Betjeningsvejledning
1. Basic Arithmetic Operations
Enter numbers and operations in the order they appear. The Direct Algebraic Logic (D.A.L.) system allows for natural input.
- Tilføjelse: [Number 1] [+] [Number 2] [=]
- Subtraktion: [Number 1] [-] [Number 2] [=]
- Multiplikation: [Number 1] [x] [Number 2] [=]
- Afdeling: [Number 1] [÷] [Number 2] [=]
2. Function Keys Overview
The calculator features a wide array of function keys. Many keys have secondary functions, accessed by pressing the 2. klasse key first, indicated by text above the primary key function.
Figur 3: Nærbillede view of the calculator's display and function keys.
Trigonometriske funktioner
Bruge synd, cos, tan for sine, cosine, and tangent. Inverse functions (synd-1, cos-1, tan-1) are accessed via 2. klasse.
Logaritmiske og eksponentielle funktioner
Keys include log (fælles logaritme), ln (natural logarithm), 10x, og ex.
Potens- og rodfunktioner
Brug x2, x3, √ (square root), and 3√ (cube root).
Hukommelsesfunktioner
The calculator has 8 temporary memory buttons. Use STO (Store) to save a value and RCL (Recall) to retrieve it.
Statistiske beregninger
To enter statistical mode, press MODE vælg derefter STAT. The calculator supports 1 and 2 variable statistics. Refer to the on-screen prompts for data entry and calculation of statistical values like mean, standard deviation, etc.
3. Valg af tilstand
Tryk på MODE key to switch between Normal and Statistical modes. Ensure you are in the correct mode for your calculations.
Opretholdelse
1. Rensning
To clean the calculator, gently wipe the surface with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, but ensure no liquid enters the calculator. Do not use abrasive cleaners or solvents.
2. Opbevaring
When not in use, store the calculator in its protective hard case to prevent scratches and damage. Avoid exposing the calculator to extreme temperatures, humidity, or direct sunlight for prolonged periods.
Figure 4: The calculator shown with its durable gloss black protective hard case.
3. Udskiftning af batteri
As mentioned in the Setup section, replace the LR44 battery when the display becomes dim or the calculator malfunctions in low light conditions. Always dispose of old batteries according to local regulations.
Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Skærmen er tom eller svag. | Utilstrækkeligt lys til solenergi eller lavt batteri. | Move to a brighter area. Replace the LR44 battery. |
| Calculator does not respond to key presses. | Temporary system error or low battery. | Tryk på NULSTIL button on the back of the calculator using a thin, pointed object. Ensure battery is good. |
| Forkerte beregningsresultater. | Incorrect mode selected (e.g., DEG/RAD/GRAD, Normal/Stat), or input error. | Check the current mode settings. Review your input sequence. Perform a NULSTIL om nødvendigt. |
| "ERROR" message on display. | Mathematical error (e.g., division by zero, invalid function argument). | Review the calculation for mathematical validity. Press ON/C for at rydde fejlen. |
Specifikationer
- Modelnummer: EL531XTWH
- Funktioner: 273
- Vise: Stor 12-cifret, 2-linjers LCD
- Strømkilde: Twin powered (Solar with LR44 battery backup)
- Batteritype: 1 x LR44 (inkluderet)
- Dimensioner (L x B x H): 6.3 x 3.1 x 0.04 tommer
- Varens vægt: 5.6 ounce
- Farve: Sort og hvid
- Lommeregner Type: Ingeniør/videnskabelig
Garanti og support
For product support, warranty information, or inquiries, please contact SHARP Electronics of Canada Ltd. at the following details:
- Adresse: 5995 Avebury Road Suite 900, Mississauga ON, L5R 3P9, Canada
- Telefon: (905) 568-7140
- Webwebsted: www.sharp.ca
Gem venligst dit købsbevis for garantikrav.
