Упатство за користење на научен калкулатор Casio FX-991MS од втора генерација

1. Вовед

The Casio FX-991MS 2nd Gen is a non-programmable scientific calculator designed for a wide range of mathematical and scientific applications. It features 401 functions and a clear 2-line display, making it suitable for students and professionals. This manual provides essential information for setup, operation, maintenance, and troubleshooting.

Figure 1: Casio FX-991MS 2nd Gen Scientific Calculator.

1.1 Клучни карактеристики

• 401 Вградени функции
• 2-Line Display for enhanced readability
• Solar and Battery Dual Power Source
• Multi-Replay Function for formula recall and editing
• Durable, drop-resistant body with water-resistant printing on keys
• Color-coded keys for intuitive operation

1.2 Што има во кутијата

• 1 x Casio FX-991MS 2nd Gen Scientific Calculator
• 1 x Упатство за употреба (овој документ)
• 1 x Warranty Card with Serial Number
• 1 x Warranty Term Sheet

2. Поставување

The Casio FX-991MS 2nd Gen calculator is designed for immediate use upon unboxing. It operates on both solar power and a nonstandard battery, ensuring continuous functionality.

2.1 Извор на енергија

The calculator utilizes a dual power system: solar power for sufficient light conditions and a built-in nonstandard battery for low-light environments or when solar power is insufficient. No initial battery installation is required as the battery is pre-installed.

2.2 Вклучување/исклучување

• За вклучување: Притиснете го ON копче.
• За исклучување: Притиснете SHIFT тогаш AC (ИСКЛУЧЕН)

3. Упатства за работа

The Casio FX-991MS 2nd Gen offers a wide array of functions accessible through its intuitive key layout and 2-line display. The upper line displays the input expression, and the lower line shows the calculation result.

Figure 2: Calculator with its protective hard case.

3.1 Основни пресметки

Внесете броеви и оператори по редослед. Притиснете = за да се добие резултатот.

• Собирање/Одземање: Користете + и - клучеви.
• Множење/делење: Користете × и ÷ клучеви.
• Загради: Користете ( и ) for grouping expressions.

3.2 Научни функции

Access scientific functions using the dedicated keys or by pressing SHIFT followed by the desired function key.

• Тригонометриски функции: гревот, cos, тен и нивните инверзни функции (SHIFT + гревотитн.).
• Логаритамски функции: дневник (основа 10) и ln (природен логаритам).
• Функции на моќност и корен: x², x³, √, ³√, xʸ.

Figure 3: Illustration of trigonometric function keys.

3.3 Статистички пресметки

The calculator supports various statistical calculations. To enter STAT mode, press РЕЖИМ and select the appropriate statistical mode (e.g., SD for standard deviation, REG for regression).

• Внесување податоци: Input data points using the M+ клуч.
• Statistical Results: Calculate mean, standard deviation, sum of squares, etc., after data entry.

Figure 4: Illustration of statistical function keys.

3.4 Multi-Replay Function

The Multi-Replay function allows you to recall and edit previously executed formulas. Use the ▲ и ▼ cursor keys to navigate through past calculations. This feature is useful for correcting errors or performing similar calculations with different values.

Figure 5: The Multi-Replay function allows quick recall and editing of previous calculations.

3.5 Константи и конверзии

The calculator includes built-in scientific constants and unit conversion functions. Refer to the detailed function guide for specific constant codes and conversion procedures.

4. Одржување

Правилното одржување обезбедува долготрајност и оптимални перформанси на вашиот калкулатор.

4.1 Чистење

Wipe the calculator's exterior with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the casing and water-resistant key printing.

4.2 Складирање

Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided protective cover to prevent scratches and damage to the keys and display.

Figure 6: Dimensions of the Casio FX-991MS 2nd Gen Calculator (16.2L x 7.7W Centimeters).

5 Смена на проблеми

If you encounter issues with your calculator, refer to the following common problems and solutions.

5.1 Проблеми со приказот

• Празен екран: Ensure sufficient light for solar power or that the battery is functional. If the display remains blank, try pressing the ON копче.
• Слаб приказ: The battery may be low. While the calculator uses solar power, a weak battery can affect display clarity in certain conditions.

5.2 Неточни резултати

• Проверете го режимот: Verify that the calculator is in the correct mode (e.g., COMP for general calculations, STAT for statistics). Press РЕЖИМ да се промени.
• Единица за агол: Ensure the correct angle unit (DEG, RAD, GRA) is selected for trigonometric calculations. Press РЕЖИМ multiple times to cycle through options.
• Ресетирај: If issues persist, perform a full reset. Press SHIFT тогаш CLR (MODE) and select Сите. This will clear all memory and settings.

6. Спецификации

7. Гаранција и поддршка

Your Casio FX-991MS 2nd Gen Scientific Calculator comes with a manufacturer's warranty and dedicated support.

7.1 Гаранција на производителот

Производот е покриен со 3-year All India Manufacturer Warranty from the date of purchase. An additional 6 months warranty can be availed by registering your product online.

• To avail warranty: Produce the original bill copy/invoice at an authorized Casio service center. The warranty card and stamp are not mandatory for online purchases.
• Регистрација преку Интернет: Регистрирајте го вашиот производ на https://register.casio.in for an extended warranty.

7.2 Поддршка за корисници

For any service-related inquiries or feedback, please contact Casio India:

• Број на линија за помош: 011-66999200
• Е-пошта: casiocare@casio.co.in
• Контакт информации за производителот: Casio India Co Pvt Ltd, A-41, 1-ви кат, MCIE, Mathura Road, Њу Делхи-110044