1. Hyrje
The Deli ED991ES is a scientific calculator designed for students and professionals, offering 417 functions for a wide range of mathematical and scientific calculations. It features a clear LCD display, rubber buttons for comfortable operation, and a protective sliding cover. This calculator is powered by both batteries and solar energy, ensuring reliable performance.
2. Konfigurimi
2.1 Instalimi i baterisë
The Deli ED991ES calculator requires two AA batteries for operation. It also features a solar panel for supplementary power, extending battery life.
- Gjeni kapakun e ndarjes së baterisë në pjesën e pasme të kalkulatorit.
- Rrëshqisni kapakun në drejtimin e treguar nga shigjeta.
- Vendosni dy bateri AA, duke u siguruar që polariteti të jetë i saktë (+/-) siç është shënuar brenda ndarjes.
- Vendoseni kapakun e ndarjes së baterisë përsëri derisa të fiksohet mirë në vendin e tij.
Shënim: The calculator utilizes a dual power system (battery and solar). Ensure sufficient light for solar power to function effectively.
2.2 Ndez/Fik
To turn the calculator on, press the [AKTIV] button. To turn it off, press [SHIFT] e ndjekur nga [FIKUR].
Image 1: The Deli ED991ES Scientific Calculator with its protective sliding cover. This image shows the overall design and key layout.
3. Udhëzimet e funksionimit
The Deli ED991ES offers 417 functions and 8 calculation modes to support various mathematical and scientific tasks. The clear LCD display shows inputs and results effectively.
3.1 Operacionet Bazë
Kryen operacione standarde aritmetike duke përdorur tastet numerike dhe operatorët ([+], [-], [×], [÷]). Shtypni [=] për të marrë rezultatin.
3.2 Function Modes
To access different calculation modes, press the [MODE SETUP] button and select the desired mode from the menu. Available modes include:
- KOMP: Basic arithmetic and functional calculations.
- STATISTIK: Statistical calculations, including standard deviation.
- TABELA: Generate number tables from functions.
- EQN: Equation solving.
- MATRIX: Matrix calculations.
- VEKTOR: Vector calculations.
- BASE-N: Base-N calculations.
- CMPLX: Complex number calculations.
3.3 Funksionet kryesore
The calculator includes dedicated keys for various functions:
- Funksionet trigonometrike: [sin], [cos], [tan] and their inverse functions (accessed via [SHIFT]).
- Funksionet logaritmike: [log], [ln].
- Funksionet e Fuqisë dhe Rrënjës: [x²], [√], [xʸ].
- Funksionet e memories: [STO] (Store), [RCL] (Recall), [M+] (Memory Plus).
- Llogaritjet thyesore: Use the fraction key to input and calculate fractions.
- Constants and Conversions: Access scientific constants and unit conversions via [SHIFT] or [ALFA].
Image 2: The calculator displaying a numerical result, demonstrating its clear screen and button layout during operation.
Image 3: A user's hand interacting with the calculator, highlighting the ergonomic design of the rubber buttons.
Image 4: The calculator positioned on a worksheet, illustrating its practical use in an academic setting.
4. Mirëmbajtja
4.1 Pastrimi
To clean the calculator, wipe it gently with a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray directly onto the device, as this may damage the display or internal components.
4.2 Ruajtja
When not in use, always keep the protective sliding cover on the calculator to prevent dust, scratches, and accidental button presses. Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
5. Troubleshooting
- Kalkulatori nuk ndizet: Check if the batteries are correctly installed and have sufficient charge. Ensure there is adequate light for the solar panel if operating in low light conditions.
- Rezultate të pasakta: Verify that the calculator is in the correct mode (e.g., DEG/RAD for angles, COMP for basic calculations). Clear previous calculations by pressing [AC].
- Ekrani është i zbehtë ose bosh: Replace the batteries. Ensure the solar panel is exposed to light.
- Butonat nuk reagojnë: Ensure no debris is lodged under the buttons. If the issue persists, try removing and reinserting the batteries to reset the device.
6. Specifikimet
| Veçori | Detaj |
|---|---|
| Numri i modelit | ED991ES |
| Markë | Deli |
| Lloji | Scientific / Engineering Calculator |
| Numri i funksioneve | 417 |
| Burimi i energjisë | Battery (2 AA), Solar |
| Lloji i ekranit | LCD |
| Dimensionet (J x P x H) | 171.9 x 83 x 17.5 mm |
| Pesha | 216 g |
| Ngjyra | E zezë |
7. Garancia dhe Mbështetja
Për informacion mbi garancinë ose mbështetje teknike, ju lutemi referojuni dokumentacionit të dhënë në momentin e blerjes ose kontaktoni shitësin tuaj. Ruajeni faturën e blerjes si provë të blerjes.
