Rhagymadrodd
This manual provides essential instructions for the proper use and care of your Casio FX-82DE CW ClassWiz Scientific Calculator. Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.

This image displays the Casio FX-82DE CW ClassWiz scientific calculator. The screen shows a natural display of a quadratic formula calculation. The calculator's dimensions are indicated as approximately 6.38 inches in length and 3.03 inches in width. Key features visible include the 'ON' and 'HOME' buttons, navigation pad, 'SHIFT', 'VARIABLE', 'FUNCTION', 'CATALOG', and 'TOOLS' buttons, along with standard numeric and scientific function keys.
Gosod
1. Gosod Batri
The Casio FX-82DE CW calculator requires one AAA (LR03) battery for operation.
- Gwnewch yn siŵr bod y gyfrifiannell wedi'i throi ODDI AR.
- Locate the battery cover on the back of the calculator.
- Llithrwch y clawr i ffwrdd i'r cyfeiriad a nodir gan y saeth.
- Insert one AAA battery, ensuring the positive (+) and negative (-) terminals are correctly aligned according to the diagram inside the compartment.
- Replace the battery cover, sliding it until it clicks securely into place.
2. Initial Power On and Display Adjustment
- Gwasgwch y ON botwm i droi'r gyfrifiannell ymlaen.
- If the display is dim or difficult to read, adjust the contrast:
- Gwasgwch [SHIFT] yna [BWYDLEN] (SETUP).
- Navigate to "Contrast" using the arrow keys and press [iawn].
- Use the left and right arrow keys to adjust the contrast level.
- Gwasgwch [AC] i adael y gosodiadau.
- The calculator's menu language is primarily German. While some settings may offer language options, the core menu navigation is fixed.
Gweithrediad
The Casio FX-82DE CW features a Natural Display, showing mathematical expressions as they appear in textbooks. Use the navigation pad to move the cursor within expressions.
Cyfrifiadau Sylfaenol
- Gweithrediadau Rhifyddeg: Defnydd [+], [-], [×], [÷] for addition, subtraction, multiplication, and division. Press [EXE] i gael y canlyniad.
- Negative Numbers: Defnyddiwch y [(-)] key for negative signs, not the subtraction key.
- Ffracsiynau: Gwasgwch y [ab/c] key (represented by a fraction icon) to input fractions. For mixed numbers, input the integer, then the fraction key, then the numerator, then the fraction key, then the denominator.
- Pwerau a Gwreiddiau: Defnydd [x²] for squares, [√] for square roots, and [x^] for other powers.
Swyddogaethau Gwyddonol
- Swyddogaethau trigonometrig: Defnydd pechod, [achos], [tan]Ar gyfer ffwythiannau gwrthdro, pwyswch [SHIFT] then the respective function key ([sin⁻¹], [cos⁻¹], [tan⁻¹]).
- Logarithmau: Defnydd [log] for base-10 logarithm and [ln] for natural logarithm.
- Unedau Ongl: To change between Degrees (DEG), Radians (RAD), and Gradians (GRAD), press [SHIFT] yna [BWYDLEN] (SETUP), navigate to "Angle Unit", and select your desired unit.
- Cysonion: Access mathematical constants like [π] (SHIFT + x10^x).
Swyddogaethau Cof
- Store Value: To store a value, input the value, press [STO] (SHIFT + RCL), then press the key corresponding to the desired variable (A, B, C, D, E, F, X, Y, M).
- Recall Value: To recall a stored value, press [RCL], then the key corresponding to the variable.
Nodweddion Arbennig
- Swyddogaeth Cod QR: To generate a QR code for calculation results or graphs, press [SHIFT] yna [QR]. Scan the code with a smartphone or tablet to visualize the data.
- Maths Box: This feature allows simulation of random experiments. Press [TOOLS], then select "Maths Box" to access coin toss or dice roll simulations.
- Statistics Mode: To perform statistical calculations, press [BWYDLEN], then select "Statistics". Input your data and use the options to calculate sums, standard deviations, and perform regression analysis.
- Verify Function: Use the "Verify" function to check if an equation is true or false.
- Table Function: Generate a table of values for one or two functions (f(x) and g(x)). Press [BWYDLEN], then select "Table".
Cynnal a chadw
Glanhau
To clean the calculator, wipe it with a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water and a mild detergent, then wipe dry immediately. Do not use strong solvents, abrasive cleaners, or spray cleaners directly onto the calculator.
Amnewid Batri
When the display becomes dim or calculations are erratic, it is time to replace the battery. Follow the battery installation steps outlined in the Gosod section. Always use a new AAA (LR03) battery. Dispose of old batteries according to local regulations.
Storio
Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, it is recommended to remove the battery to prevent leakage.
Datrys problemau
| Problem | Ateb |
|---|---|
| Nid yw'r gyfrifiannell yn troi ymlaen. | Check battery installation. Ensure the battery is new and correctly inserted. |
| Mae'r arddangosfa'n dywyll neu'n wag. | Adjust display contrast (see Gosod section). Replace battery if necessary. |
| Canlyniadau cyfrifo anghywir. | Check input values and calculation mode (e.g., angle units). Perform a calculator reset. |
| Calculator freezes or behaves erratically. | Gwasgwch y [AC] button. If the issue persists, perform a full reset by pressing [SHIFT] yna [9] (CLR), then select "All" and confirm. Note: This will clear all memory and settings. |
| QR code not scanning. | Ensure good lighting and a stable camera. The QR code function requires a compatible smartphone app. |
Manylebau
- Model: FX-82DECW
- Arddangos: 63 x 192 full dot, Natural Display, 4 shades of grey
- Input Logic: Natural-V.P.A.M.
- Swyddogaethau: Over 310 functions (including trigonometric, logarithmic, statistical, fraction, etc.)
- Cof: 9 variable memory
- Ffynhonnell Pwer: 1 x AAA (LR03) battery
- Bywyd batri: Approximately 2 years (when used for 1 hour per day)
- Dimensiynau (H x W x D): 13.8 mm x 77 mm x 162 mm (0.54 x 3.03 x 6.38 modfedd)
- Pwysau: Tua 100 g (3.5 owns)
- Diffodd awtomatig: Oes
- Wedi'i gynnwys: Achos caled
Gwarant a Chefnogaeth
Gwybodaeth Gwarant
Casio products are manufactured to high-quality standards. This product is covered by a manufacturer's warranty against defects in materials and workmanship. The specific terms and duration of your warranty may vary by region. Please refer to the warranty card included with your product or visit the official Casio websafle am wybodaeth fanwl.
Cefnogaeth i Gwsmeriaid
For technical assistance, troubleshooting, or inquiries regarding your Casio FX-82DE CW calculator, please contact Casio customer support. Contact information can typically be found on the official Casio website for your region or in the documentation accompanying your product.





