1. Introduktion
This manual provides instructions for the proper use and maintenance of your Texas Instruments TI-503SV Pocket Calculator. The TI-503SV is an 8-digit LCD display calculator designed for basic arithmetic operations, making it suitable for everyday calculations.
Figure 1: The Texas Instruments TI-503SV Pocket Calculator, showing its 8-digit LCD display and keypad layout.
2. Opsætning
2.1 Batteriinstallation
The TI-503SV calculator is powered by batteries. To install or replace batteries:
- Find batteridækslet på bagsiden af lommeregneren.
- Using a small screwdriver or coin, gently open the battery compartment.
- Insert the required batteries, ensuring correct polarity (+ and - terminals). Refer to the markings inside the compartment.
- Luk batterirummets dæksel forsvarligt.
The calculator is designed for immediate use upon battery installation. No additional setup is typically required.
3. Betjeningsvejledning
This section details the basic functions and operations of the TI-503SV calculator.
3.1 Tænd/sluk
- For at tænde lommeregneren skal du trykke på ON/C nøgle.
- The calculator will automatically power off after approximately 5-10 minutes of inactivity to conserve battery life.
3.2 Grundlæggende aritmetiske operationer
Enter numbers using the numeric keypad and perform operations as follows:
- Addition (+): Enter first number, press +, enter second number, press =.
- Subtraction (-): Enter first number, press -, enter second number, press =.
- Multiplication (x): Enter first number, press x, enter second number, press =.
- Division (÷): Enter first number, press ÷, enter second number, press =.
3.3 Ryd funktioner
- Clear Entry (CE): Clears the last entered number or operation without affecting previous calculations. Pressing CE once clears the current entry.
- Clear All (ON/C): Clears all entries and operations, resetting the calculator to zero. Pressing ON/C twice (or once if no entry) clears everything.
3.4 Hukommelsesfunktioner
Lommeregneren har hukommelsesfunktioner til at gemme og genkalde værdier.
- Memory Plus (M+): Tilføjer den viste værdi til hukommelsen.
- Memory Minus (M-): Trækker den viste værdi fra hukommelsen.
- Memory Recall/Clear (MRC):
- Press once to recall the value stored in memory.
- Press twice to clear the memory (sets memory to zero).
3.5 Andre funktioner
- Procenttage (%): Bruges til procenttage beregninger. F.eksampf.eks. for at beregne 10% af 50: indtast 50, tryk på x, indtast 10, tryk %.
- Square Root (√): Calculates the square root of the displayed number. Enter number, press √.
- Sign Change (+/-): Changes the sign of the displayed number from positive to negative or vice versa.
4. Vedligeholdelse
4.1 Rengøring
Brug en blød, tør klud til at rengøre lommeregneren. Til genstridigt snavs, tør letampen the cloth with water or a mild, non-abrasive cleaner. Avoid using harsh chemicals, solvents, or abrasive materials, as these can damage the display or casing.
4.2 Udskiftning af batteri
When the display becomes dim or the calculator functions erratically, it is likely time to replace the batteries. Refer to section 2.1 Batteriinstallation for instructions. Always dispose of used batteries responsibly according to local regulations.
4.3 Opbevaring
Store the calculator in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. If storing for an extended period, it is recommended to remove the batteries to prevent leakage.
5. Fejlfinding
If you encounter issues with your TI-503SV calculator, refer to the following common problems and solutions:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Skærmen er tom eller svag. | Lave eller døde batterier. | Udskift batterierne. Sørg for korrekt polaritet. |
| Lommeregneren tænder ikke. | Ingen batterier, døde batterier eller forkert batteriinstallation. | Check battery installation and replace if necessary. Press ON/C. |
| Forkerte beregningsresultater. | Incorrect key entry, or previous calculation not cleared. | Trykke ON/C twice to clear all and re-enter calculation. Verify input. |
| Tasterne reagerer ikke. | Dirt or debris under keys, or internal malfunction. | Gently clean around keys. If problem persists, contact support. |
6. Specifikationer
Key specifications for the Texas Instruments TI-503SV Pocket Calculator:
- Model: TI-503SV
- Skærmtype: 8-cifret LCD
- Strømkilde: Batteridrevet
- Lommeregner Type: Standardfunktion
- Produktdimensioner: 1 x 1 x 1 tommer (ca.)
- Varens vægt: 3.2 g (omtrentlig)
- Fabrikant: Texas Instruments
7. Garanti og support
For warranty information or technical support, please refer to the documentation included with your purchase or visit the official Texas Instruments webwebsted. Gem din købsbevis til garantikrav.
Official Texas Instruments Webwebsted: education.ti.com
