Introduction
The Kenko AT-8172-12 is a professional 12-digit scientific calculator designed for a wide range of mathematical and statistical operations. It features 240 functions, making it suitable for students and professionals in various fields, including algebra, geometry, trigonometry, differential calculus, and integral calculus.
This calculator is equipped with a large, clear LCD screen that displays both calculation formulas and results simultaneously, enhancing readability and accuracy. Its sensitive, large plastic keys ensure quick and precise input, while the durable sliding cover provides protection and a comfortable grip.
Setup
Battery Installation
The Kenko AT-8172-12 calculator operates on an LR44 battery. To install or replace the battery:
- Locate the battery compartment cover on the back of the calculator.
- Use a small screwdriver to open the cover.
- Insert the LR44 battery, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Replace the battery compartment cover and secure it.
The calculator is designed to function reliably even in dim lighting conditions, thanks to its efficient power management.
Figure 1: Kenko AT-8172-12 Scientific Calculator with its sliding cover partially open, showing the display and keys.
Operating Instructions
Basic Operations
To perform basic arithmetic, simply enter the numbers and press the corresponding operation keys (+, -, ×, ÷). Press = to display the result.
Scientific Functions
The calculator supports 240 scientific functions, including:
- Trigonometric Functions: Sine (sin), Cosine (cos), Tangent (tan) and their inverses.
- Roots: Square root (√), N-th roots.
- Percentages: % key.
- Complex Numbers: Operations involving complex numbers.
- Permutations and Combinations.
- Linear Regression and Standard Deviations.
- Variable Solving.
Refer to the key labels for specific function access. Many functions are accessed by pressing a SHIFT or 2ndF key followed by the desired function key.
Display and Angle Modes
The 12-digit LCD screen allows for clear viewing of both the input formula and the calculated result. The calculator supports three angle modes: Degrees (DEG), Radians (RAD), and Gradians (GRAD). Use the MODE key to cycle through these settings.
Statistical Calculations
The calculator facilitates 1-variable and 2-variable statistical calculations. Consult the specific key functions for entering data and performing statistical analyses.
Figure 2: Close-up view of the Kenko AT-8172-12 Scientific Calculator's keys and LCD display.
Maintenance
Cleaning
To clean the calculator, use a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water and wipe gently. Avoid using harsh chemicals, abrasive cleaners, or solvents, as these can damage the display or casing.
Storage and Protection
Always use the provided durable sliding cover to protect the calculator's screen and keys from scratches, dust, and accidental damage when not in use. Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
Battery Life
The LR44 battery is designed for a long service life. If the display becomes dim or the calculator functions erratically, replace the battery as described in the Setup section.
Troubleshooting
Display is blank or dim
- Check if the calculator is turned on by pressing the ON/AC key.
- Replace the LR44 battery if it is old or depleted.
- Ensure the battery is installed with correct polarity.
Incorrect calculation results
- Verify the input values and the sequence of operations.
- Check the current angle mode (DEG, RAD, GRAD) if performing trigonometric calculations. Press MODE to change.
- Clear all memory and previous calculations by pressing ON/AC twice or using the CLR function if available.
Keys are unresponsive
- Ensure no debris is lodged under the keys.
- If the calculator has been exposed to moisture, allow it to dry completely.
- Replace the battery if the calculator is generally unresponsive.
Specifications
| Brand Name | Kenko |
| Model Number | AT-8172-12 (Part Number: KK-8172-12) |
| Color | Silver |
| Calculator Type | Engineering / Scientific |
| Power Source | Battery Powered (LR44) |
| Material | Plastic |
| Display Type | LCD |
| Item Weight | 100 grams |
Warranty Information
This product is provided without a warranty. Please refer to the retailer's return policy for any initial product defects.
Support
For further assistance or inquiries regarding your Kenko AT-8172-12 scientific calculator, please contact the retailer or the manufacturer directly. Keep your purchase receipt for reference.
