1. Introduktion
Tak for købetasing the Casio JE-12D-WE-N Ergonomic 12-Digit Day & Time Calculator. This manual provides detailed instructions for the proper use and maintenance of your calculator. Designed with user comfort in mind, this calculator features an ergonomic design to facilitate natural and efficient operation. Please read this manual thoroughly before using the product and keep it for future reference.
Figur 1.1: Vinklet view of the Casio JE-12D-WE-N calculator, showcasing its white finish and key layout.
2. Opsætning
2.1 Strømkilde
The Casio JE-12D-WE-N calculator operates on both solar power and a backup battery. For optimal performance, ensure the solar panel is exposed to sufficient light. If the display is dim or unresponsive in low light, the battery may be low.
2.2 Førstegangsbrug
- Tryk på ON/AC button to turn on the calculator and clear any previous calculations.
- Verify the display shows "0" to confirm it is ready for use.
3. Betjeningsvejledning
3.1 Grundlæggende beregninger
- Addition (+), Subtraction (-), Multiplication (×), Division (÷): Enter the first number, press the desired operator key, enter the second number, then press =.
- Clear Entry (C): Clears the last entered number or operation.
- Alt klart (AC): Sletter alle indtastninger og beregninger og nulstiller lommeregneren.
3.2 Hukommelsesfunktioner
- M+: Tilføjer den viste værdi til hukommelsen.
- M-: Trækker den viste værdi fra hukommelsen.
- MR: Genkalder den værdi, der er gemt i hukommelsen.
- MC: Rydder hukommelsen.
3.3 Tax Calculation
The calculator includes dedicated keys for tax calculations.
- Indstilling af skattesatsen: Trykke 税率設定 (Tax Rate Setting), enter the tax rate percentage, og tryk derefter på 税率設定 igen for at gemme.
- Tax+: Adds tax to the displayed value.
- Tax-: Subtracts tax from the displayed value.
3.4 Day/Time Calculation
Brug 日数/時間 (Day/Time) key for specific date and time calculations. Refer to the on-screen indicators for day and time modes.
Figur 3.1: Forside view of the calculator, highlighting the display and key layout, including dedicated tax and day/time keys.
4. Nøglefunktioner
4.1 Ergonomisk design
The Casio JE-12D-WE-N is engineered with an ergonomic design, ensuring comfort and ease of use during extended periods. The calculator's housing and keys are shaped to fit the natural posture of the hand.
Figur 4.1: Side view illustrating the 3-degree ergonomic tilt of the calculator, designed for comfortable operation.
This design allows the right hand to operate at a slight angle, with key presses remaining vertical, reducing strain. This approach is based on thorough analysis of hand and finger states during operation, conducted in collaboration with specialized institutions.
Figure 4.2: Diagram explaining the ergonomic key design, showing how the hand naturally fits the calculator and key presses are vertical.
Figure 4.3: Close-up showing the rounded, soft design and the wave-patterned texture on the back for improved grip.
Figure 4.4: Images depicting the detailed analysis of hand and finger positions during calculator operation, contributing to the ergonomic design.
4.2 Responsive Key Input
The calculator features a 3-key rollover function, allowing for rapid input without missed keystrokes. The key arrangement and concave shape of the keys are designed for optimal typing comfort and accuracy.
Figure 4.5: Illustration of the fast input capability and the ergonomic concave key shapes for improved typing.
4.3 Durable Keys and Stability
Keys are constructed using a two-color molded resin process (excluding some keys), ensuring that numbers and symbols do not wear off over time. Large stoppers on the base prevent the calculator from slipping during use, providing stable operation.
Figure 4.6: Detail of the two-color molded keys for durability and the large non-slip stoppers on the calculator's base.
5. Vedligeholdelse
5.1 Rengøring
- Tør lommeregneren af med en blød, tør klud.
- Til genstridigt snavs, let dampRengør kluden med vand og et mildt rengøringsmiddel, og tør derefter straks efter.
- Do not use strong solvents, abrasive cleaners, or spray cleaners directly onto the calculator.
5.2 Opbevaring
Opbevar lommeregneren et køligt, tørt sted væk fra direkte sollys og ekstreme temperaturer.
6. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Skærmen er tom eller svag. | Utilstrækkeligt lys til solpanelet eller lavt batteri. | Move the calculator to a well-lit area. If the problem persists, the battery may need replacement (consult service center). |
| Forkerte beregningsresultater. | Incorrect input, or memory function active. | Trykke AC to clear all operations. Re-enter the calculation carefully. Check if the "M" indicator is on and clear memory with MC om nødvendigt. |
| Tasterne reagerer ikke. | Calculator may be frozen. | Trykke ON/AC to reset. If problem persists, contact customer support. |
7. Specifikationer
- Model: Casio JE-12D-WE-N
- Mærke: Casio
- Cifre: 12-cifret skærm
- Funktioner: Basic arithmetic, Memory, Tax calculation, Day/Time calculation, Percentage, Square Root, Grand Total (GT)
- Magt: Solar and Battery (Dual Power)
- Funktioner: Ergonomic design, 3-key rollover, two-color molded keys, large non-slip stoppers.
8. Garanti og support
For garantioplysninger og kundesupport henvises til garantikortet, der følger med dit produkt, eller besøg den officielle Casio-side. webwebstedet. Behold din købskvittering som købsbevis.
Officiel Casio Webwebsted: www.casio.com
