Casio DS-1JT Heavy-Duty Desktop Calculator User Manual

1. Úvod

This manual provides essential instructions for the proper use and maintenance of your Casio DS-1JT heavy-duty desktop calculator. Designed for durability and efficiency, this calculator features a 300-step check function, tax calculation capabilities, and a robust design suitable for demanding environments. Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.

2. Konec produktuview

The Casio DS-1JT is a heavy-duty desktop calculator featuring a classic design and a dark gray plastic case that enhances its durability. It is equipped with a large LCD display and fade-resistant keys for reliable long-term use.

Přední view of the Casio DS-1JT heavy-duty desktop calculator, showing its large LCD display and key layout.

3. Nastavení

3.1 Zdroj napájení

The Casio DS-1JT calculator operates on dual power: solar and battery. It comes with one battery pre-installed. The solar panel provides power in well-lit environments, while the battery ensures continuous operation in low-light conditions.

3.2 První použití

Upon first use, ensure the calculator is exposed to sufficient light for the solar panel to activate, or press the AC/ON button to power it on. No additional setup is typically required for basic operation.

4. Návod k obsluze

4.1 Základní výpočty

• Doplnění (+): Enter the first number, press '+', enter the second number, press '='.
• Odečítání (-): Enter the first number, press '-', enter the second number, press '='.
• Násobení (×): Enter the first number, press '×', enter the second number, press '='.
• Dělení (÷): Enter the first number, press '÷', enter the second number, press '='.

4.2 Check and Correct Function (300 Steps)

Tato funkce umožňuje znovuview and correct up to 300 calculation steps. This is particularly useful for preventing errors in long calculations.

• RECHECK: Stisknutím tohoto tlačítka review previous calculation steps.
• BACK/FORWARD: Use these buttons to navigate through the recorded steps.
• OPRAVIT: If an error is found, navigate to the incorrect step and enter the correct value. The calculator will automatically adjust subsequent calculations.

4.3 Tax Calculation

The calculator comes with a pre-adjusted 5% tax rate. You can perform direct calculations for prices including or excluding tax.

• TAX+: Přičte k zobrazené hodnotě přednastavenou daňovou sazbu.
• TAX-: Odečte přednastavenou daňovou sazbu od zobrazené hodnoty.

4.4 Funkce paměti

• M+: Přičte zobrazenou hodnotu do paměti.
• M-: Odečte zobrazenou hodnotu z paměti.
• MRC: Recalls the memory content (press once) or clears the memory (press twice).

4.5 Další funkce

• GT (celkový součet): Displays the grand total of all calculations performed since the last GT clear.
• MU (Mark-Up): Calculates mark-up and mark-down percentages.
• % (procentotagE): Používá se pro procentatage výpočty.
• √ (druhá odmocnina): Vypočítá druhou odmocninu zobrazeného čísla.
• 3-Key Rollover: Ensures that keystrokes are not lost during high-speed input, improving accuracy.
• Silent Touch Keys: Designed for quiet operation, reducing noise during use.
• Function Command Signs: Indicators on the display show the current operation being performed.

5. Údržba

5.1 Čištění

To clean the calculator, wipe it gently with a soft, dry cloth. Do not use abrasive cleaners, solvents, or excessive moisture, as these can damage the display or internal components.

5.2 Výměna baterie

When the display becomes dim or unresponsive in low light, it may be time to replace the battery. Refer to the battery compartment on the back of the calculator for instructions on how to open it and replace the battery. Ensure the calculator is powered off before replacing the battery.

5.3 Skladování

Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. The anti-slip structure helps keep it stable on your desk.

6. Řešení problémů

6.1 Problémy se zobrazením

• Ztlumený displej: Ensure the calculator is in a well-lit area for solar power, or replace the battery if necessary.
• Bez displeje: Press the AC/ON button. If still no display, check battery installation or replace the battery.

6.2 Chyby ve výpočtu

• Nesprávné výsledky: Utilize the 300-step check and correct function (RECHECK, BACK, FORWARD, CORRECT buttons) to review your input and make corrections.
• Neočekávané chování: Clear all calculations and memory by pressing AC/ON. If the issue persists, remove and reinsert the battery.

7. Specifikace

8. Záruka a podpora

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