OSALO Desktop Calculator OS-8812T User Manual

1. Rhagymadrodd

Thank you for choosing the OSALO Desktop Calculator OS-8812T. This 12-digit desktop calculator is designed for both home and office use, offering a large display, comfortable keys, and essential functions including a tax calculation feature. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.

2. Nodweddion Allweddol

• Tax Rate Calculator Function: Simplifies tax calculations with integrated tax rate adjustments (TAX+, TAX-).
• Arddangosfa LCD fawr 12-digid: High-resolution display for clear and easy readability, tilted at 15 degrees for improved viewing cysur.
• Ergonomic Concave Round Buttons: Designed for comfortable and accurate input, adapting to your fingertips.
• Allweddi Sensitif: Ensures quick and precise typing.
• Ffynhonnell Pwer Deuol: Operates on solar energy and a single LR44 battery (included), providing reliable power and energy efficiency.
• Dyluniad gwrthlithro: Features anti-slip mats for stability during use.

3. Cynnyrch Drosview a Dimensiynau

Familiarize yourself with the calculator's layout and physical specifications.

Delwedd: Blaen ac ochr view of the OSALO Desktop Calculator OS-8812T, illustrating its dimensions (189mm length, 140mm width, 31mm height, 15-degree display tilt).

Delwedd: Manwl view of the OSALO Desktop Calculator OS-8812T with key functions labeled, including Operation Symbol Display, Grand Total (GT), Memory Plus/Minus (M+, M-), Back Space, All Clear (AC), Tax Rate Settings (TAX+, TAX-), Memory Load/Clear (MRC), and Root (√).

4. Gosod

4.1 Ffynhonnell Pwer

The OSALO OS-8812T calculator operates using a dual power system: solar energy and a single LR44 battery. The calculator will automatically switch to battery power in low light conditions.

Gosod / Amnewid Batri:

1. Gwnewch yn siŵr bod y gyfrifiannell wedi'i diffodd.
2. Lleolwch yr adran batri ar gefn y gyfrifiannell.
3. Defnyddiwch sgriwdreifer bach i agor clawr y batri.
4. Insert one LR44 battery, ensuring the correct polarity (+/-).
5. Amnewid gorchudd y batri a'i sicrhau.

Image: The underside of the OSALO Desktop Calculator, highlighting the battery compartment and the anti-slip mats at each corner.

4.2 Defnydd Cychwynnol

Gwasgwch y AC (All Clear) button to clear any previous calculations and ensure the display shows '0'. The calculator is now ready for use.

5. Cyfarwyddiadau Gweithredu

5.1 Gweithrediadau Rhifyddeg Sylfaenol

Perform addition, subtraction, multiplication, and division using the respective keys (+, -, ×, ÷) and the equals (=) key.

5.2 Tax Calculation Function

The calculator features dedicated keys for tax calculations (TAX+, TAX-). This function simplifies adding or subtracting a predefined tax rate.

Setting the Tax Rate:

1. Gwasgwch AC i glirio'r arddangosfa.
2. Gwasgwch y CYFRADD botwm.
3. Enter the desired tax rate (e.g., 8 for 8%).
4. Gwasgwch CYFRADD again to save the tax rate. The display will show the set rate.

Using Tax Functions:

• TAX+: To add tax to an amount, enter the amount, then press TRETH+. The display will show the amount including tax.
• TAX-: To subtract tax from an amount, enter the amount, then press TRETH-. The display will show the amount excluding tax.
• COFIO: To check the currently set tax rate, press COFIO.

Image: A table demonstrating the purpose, operation, and result for various tax functions, including setting an 8% tax rate, calculating total amount after tax, and total amount before tax.

5.3 Swyddogaethau Cof

• M+: Yn ychwanegu'r gwerth a ddangosir at y cof.
• M-: Yn tynnu'r gwerth a ddangosir o'r cof.
• MRC: Recalls the memory content. Pressing it twice clears the memory.
• GT (Cyfanswm Mawr): Accumulates the results of all calculations. Pressing it twice clears the grand total.

5.4 Swyddogaethau Eraill

• %: Percentage key.
• √: Square root key.
• Back Space (►): Deletes the last entered digit.
• C/CE: Clear Entry. Clears the last entry without clearing the entire calculation.

5.5 Dylunio Ergonomig

Delwedd: Llun agos view of the calculator's concave round buttons, designed for comfortable and precise finger placement during operation.

Image: A diagram illustrating the 30-degree ergonomic tilt of the calculator, showing how it provides an optimal viewing angle for users at a desk.

5.6 Fideos Addysgiadol

6. cynnal

6.1 Glanhau

I lanhau'r gyfrifiannell, sychwch yr wyneb yn ysgafn gyda lliain meddal, sych. Ar gyfer baw ystyfnig, sychwch ychydigampen the cloth with water and mild soap, then wipe dry immediately. Avoid using abrasive cleaners, solvents, or spraying liquids directly onto the calculator.

6.2 Gofal Batri

If the calculator will not be used for an extended period, it is recommended to remove the LR44 battery to prevent leakage and potential damage to the device.

6.3 Storio

Store the calculator in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. Keep it away from strong magnetic fields.

7. Datrys Problemau

• Mae'r arddangosfa'n wag neu'n dywyll:
  • Ensure sufficient light for solar power.
  • Check if the LR44 battery is correctly installed and not depleted. Replace if necessary.
  • Gwasgwch AC i ailosod.
• Cyfrifiadau anghywir:
  • Gwasgwch AC to clear all previous operations and memory.
  • Verify the input sequence and numbers.
  • Check if any memory functions (M+, M-, GT) are active and affecting the result.
• Mae'r allweddi'n anymatebol:
  • Ensure the calculator is powered on.
  • Glanhewch yr allweddi i gael gwared ar unrhyw falurion.
  • Os yw'r broblem yn parhau, ceisiwch ailosod y batri.

8. manylebau

9. Gwybodaeth Diogelwch

• Do not attempt to disassemble or modify the calculator.
• Keep the calculator away from water and other liquids to prevent damage.
• Osgowch ollwng y gyfrifiannell neu ei rhoi dan effeithiau cryf.
• Cadwch fatris allan o gyrraedd plant. Os caiff ei lyncu, ceisiwch sylw meddygol ar unwaith.

10. Gwarant a Chefnogaeth

For warranty information and customer support, please refer to the documentation provided with your purchase or contact OSALO customer service directly. Keep your proof of purchase for any warranty claims.