1. Pengenalan
This manual provides detailed instructions for the proper use and maintenance of your OSALO Scientific Calculator, model OS-82ES PLUS II. This calculator is designed for secondary school students and professionals, offering 252 functions, a 2-line display, and dual solar and battery power for reliable operation. Please read this manual thoroughly to ensure optimal performance and longevity of your device.
Figure 1: OSALO Scientific Calculator OS-82ES PLUS II. This image shows the calculator from an angled perspective, highlighting its black body, white keys, and the solar panel at the top. The display shows a complex mathematical integral.
2. Produk Lebihview
Familiarize yourself with the various components and keys of your OSALO Scientific Calculator.
Figure 2: Key components of the OSALO Scientific Calculator. This diagram labels the solar panel, extra large display, control keys, SHIFT key, Mode key, Power on button, Function keys, Delete key, and Last answer key.
- Panel Suria: Provides power in well-lit environments.
- Paparan Lebih Besar: 2-line LCD for clear viewpembentukan persamaan dan keputusan.
- Kekunci Kawalan: Navigation and directional input.
- Kunci SHIFT: Accesses secondary functions printed above keys in yellow.
- ALPHA Key: Accesses alphabetic characters and variables printed above keys in red.
- Kunci Mod: Changes calculation modes (e.g., COMP, STAT, TABLE).
- Butang HIDUP: Powers on the calculator.
- Kekunci Fungsi: Perform various mathematical and scientific operations.
- DEL (Delete) Key: Deletes the last entered character.
- AC (All Clear) Key: Clears all calculations and memory (except independent memory).
- ANS (Answer) Key: Recalls the result of the previous calculation.
3. Persediaan
3.1. Power Supply and Battery Installation
The OSALO Scientific Calculator is powered by both solar energy and an LR44 button cell battery. The battery is included and pre-installed.
- Pastikan kalkulator dimatikan.
- Cari petak bateri di bahagian belakang kalkulator.
- Gunakan pemutar skru kecil untuk membuka penutup petak bateri.
- If replacing, remove the old LR44 battery.
- Masukkan bateri LR44 baharu dengan bahagian positif (+) menghadap ke atas.
- Gantikan penutup petak bateri dan kencangkannya dengan skru.
Note: The solar panel provides supplementary power and extends battery life, but a functional battery is required for consistent operation, especially in low-light conditions.
3.2. Kuasa Awal Hidup
Tekan ke ON button to turn on the calculator. The display will show "0" or the last calculated result.
3.3. Turning Off the Calculator
Untuk mematikan kalkulator, tekan SHIFT kemudian AC (OFF). The calculator will also automatically power off after a period of inactivity to conserve battery life.
4. Arahan Operasi
4.1. Basic Calculations
Enter numbers and operators as you would write them. Press = untuk mendapatkan hasilnya.
- Tambahan: 1 + 2 =
- Penolakan: 5 - 3 =
- Pendaraban: 4 × 6 =
- Bahagian: 10 ÷ 2 =
4.2. 2-Line Display and Natural Input/Output
The calculator features a 2-line LCD display, allowing you to view both the input expression and the result simultaneously. It supports natural input and output, displaying fractions, roots, and other expressions as they appear in textbooks.
Gambar 3: Cthamples of Natural Input & Output and Full-do Display. The image shows how complex fractions and roots are displayed in a natural, written form, and how statistical data can be viewed in a full-dot matrix display.
4.3. Using Scientific Functions (252 Functions)
The calculator provides 252 functions, including trigonometric, logarithmic, exponential, power, root, fraction, permutation, combination, and statistical calculations.
- Fungsi Sekunder: Tekan SHIFT followed by the desired key to access the yellow-printed function above it.
- Alpha Functions: Tekan ALPHA followed by the desired key to access the red-printed character or variable above it.
- Fungsi trigonometri: guna dosa, cos, sawo matang keys. Inverse functions are accessed via SHIFT.
- Fungsi Logaritma: guna log (asas 10) dan ln (natural logarithm) keys.
- Pecahan: Gunakan ab/c key to input and convert fractions.
- Statistik: Tekan MODE and select STAT mode. Refer to the calculator's on-screen menu for specific statistical calculations (e.g., standard deviation, linear regression).
- Fungsi Memori: guna STO (Kedai) dan RCL (Recall) keys to store and retrieve values from independent memory.
4.4. Brightness Adjustment Function
The calculator features a brightness adjustment function to optimize display visibility and reduce visual fatigue.
Figure 4: Brightness Adjustment Function. This image illustrates the difference between a 'Dark' display setting (to relieve visual fatigue) and a 'Bright' setting (for clear and intuitive viewing), demonstrating the calculator's adjustable screen brightness.
To adjust brightness, navigate through the MODE settings or use specific key combinations as indicated in the on-screen menu.
5. Ciri-ciri Utama
The OSALO Scientific Calculator OS-82ES PLUS II is equipped with several features designed to enhance usability and functionality for academic and professional use.
Gambar 5: Lebihview of 252 Functions. This image highlights key capabilities such as Multi-replay function, Combination and Permutation, Statistics (STAT-data editor, Standard deviation, Regression analysis), Fraction Calculation, 9 variable memories, and the inclusion of a slide-on hard case.
- 252 Fungsi: Comprehensive set of mathematical, statistical, and scientific functions.
- 2-Line Large Display: Clear and simultaneous display of input and results, supporting natural textbook display.
- Sensitive Keys: Premium induction buttons provide quick and accurate response to input.
- Hard Sliding Cover: Ergonomically designed cover protects the calculator from damage and provides a comfortable grip.
- Dual Power (Solar & Battery): Ensures reliable operation in various lighting conditions.
- Multi-replay Function: Allows for quick review and editing of previous calculations.
- STAT-data Editor: Facilitates statistical calculations including standard deviation and regression analysis.
- 9 Variable Memories: Store and recall up to 9 different values for complex calculations.
Figure 6: Detail of LCD Display and Comfortable Keys. This image provides a close-up view of the calculator's clear LCD display and the tactile, responsive keys, emphasizing user comfort and readability.
6. Penyelenggaraan
6.1. Pembersihan
- Lap bahagian luar kalkulator dengan kain lembut dan kering.
- Untuk kotoran degil, sedikit dampen kain dengan air dan detergen lembut, kemudian lap kering serta-merta.
- Jangan gunakan pelarut yang kuat, pembersih yang kasar atau pembersih semburan terus ke atas kalkulator.
6.2. Penyimpanan
- Store the calculator in a cool, dry place, away from direct sunlight and extreme temperatures.
- Always use the provided hard sliding cover to protect the display and keys when not in use.
- Avoid placing heavy objects on the calculator.
6.3. Penggantian Bateri
When the display becomes dim or calculations are erratic, it may be time to replace the LR44 battery. Follow the instructions in Section 3.1. "Power Supply and Battery Installation". Dispose of used batteries according to local regulations.
7. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Kalkulator tidak boleh dihidupkan. | Low or dead battery; insufficient light for solar power. | Replace the LR44 battery. Ensure adequate lighting for solar panel. |
| Paparan malap atau kosong. | Low battery; poor lighting; brightness setting too low. | Replace battery. Move to a brighter area. Adjust display brightness (refer to Section 4.4). |
| Keputusan pengiraan yang salah. | Incorrect mode setting; syntax error; incorrect input. | Check the current mode (e.g., DEG/RAD, COMP/STAT). Review input for errors. Press AC to clear and restart. |
| Kekunci tidak responsif. | Calculator frozen; physical obstruction. | Try turning the calculator off and on again. Check for debris under keys. |
| "Math ERROR" or "Syntax ERROR" displayed. | Mathematical impossibility (e.g., division by zero); incorrect expression format. | Review your input for mathematical errors or incorrect syntax. Press AC untuk membersihkan ralat. |
8. Spesifikasi
Figure 7: Calculator Dimensions and Weight. This image provides a side and front view of the calculator, indicating its approximate thickness (0.79 inches / 20mm), height (6.46 inches / 164mm), width (3.15 inches / 80mm), and net weight (4.9oz / 140g). Note that official specifications may vary slightly.
| Ciri | Perincian |
|---|---|
| Model | OS-82ES PLUS II |
| Jenama | OSALO |
| Fungsi | 252 |
| Jenis Paparan | 2-line LCD, Natural Textbook Display |
| Saiz Paparan Skrin | 6 Sentimeter |
| Sumber Kuasa | Solar & Battery Supply (LR44 x 1, included) |
| Jenis Bahan | plastik |
| Dimensi Produk | 16.4 x 8 x 0.1 cm (6.46 x 3.15 x 0.04 inci) |
| Berat Barang | 190 g (lebih kurang 6.7 oz) |
| Termasuk Bateri Boleh Dicas Semula | Tidak |
9. Waranti dan Sokongan
For specific warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. OSALO products are designed for reliability and performance.
If you encounter issues not covered in the troubleshooting section, or require further assistance, please contact OSALO customer support through their official webtapak atau maklumat hubungan yang diberikan bersama pembungkusan produk anda.