تعارف
This manual provides comprehensive instructions for the proper use and maintenance of your SHARP EL531XTWH Scientific Calculator. Designed for students and professionals, this calculator offers over 273 advanced scientific and mathematical functions, utilizing Direct Algebraic Logic (D.A.L.) for intuitive operation.

شڪل 1: سامهون view of the SHARP EL531XTWH Scientific Calculator, showcasing ان جي ڊسپلي ۽ ڪي پيڊ.
Key features include a large 12-digit, 2-line LCD display, 273 functions, two operational modes (Normal & Stat), 8 temporary memory buttons, and 1 & 2 variable statistics capabilities. Its durable design and twin power source (solar with battery backup) ensure reliable performance.
سيٽ اپ ڪريو
1. بيٽري لڳائڻ
The SHARP EL531XTWH calculator is twin-powered, operating on solar energy with a battery backup. A 1.5V LR44 battery is included. If the display becomes dim or unresponsive in low light, the battery may need replacement.
- Turn the calculator OFF.
- ڪيلڪيوليٽر جي پوئين پاسي بيٽري جي خاني کي ڳوليو.
- Carefully open the battery cover using a small screwdriver or coin.
- Remove the old battery (if applicable) and insert a new LR44 battery, ensuring the correct polarity (+/-).
- بيٽري جي ڍڪ کي محفوظ طور تي بند ڪريو.

شڪل 2: پوئتي view of the calculator, indicating the battery compartment location.
2. Initial Power On and Display Check
کي دٻايو آن/سي key to turn on the calculator. The display should show "0." or "0.00" depending on the initial settings. If the display is blank or shows unusual characters, ensure the battery is correctly installed and try pressing the ري سيٽ ڪريو button (usually a small recessed button requiring a thin object like a paperclip).
آپريٽنگ هدايتون
1. Basic Arithmetic Operations
Enter numbers and operations in the order they appear. The Direct Algebraic Logic (D.A.L.) system allows for natural input.
- اضافو: [Number 1] [+] [Number 2] [=]
- گھٽائڻ: [Number 1] [-] [Number 2] [=]
- ضرب: [Number 1] [x] [Number 2] [=]
- ڊويزن: [Number 1] [÷] [Number 2] [=]
2. Function Keys Overview
The calculator features a wide array of function keys. Many keys have secondary functions, accessed by pressing the ٻيو ايف key first, indicated by text above the primary key function.

شڪل 3: بند اپ view of the calculator's display and function keys.
Trigonometric Functions
استعمال ڪريو گناهه, cos, رنگ for sine, cosine, and tangent. Inverse functions (گناهه-1, cos-1, رنگ-1) are accessed via ٻيو ايف.
Logarithmic and Exponential Functions
Keys include لاگ (common logarithm), ln (natural logarithm), 10x، ۽ ex.
Power and Root Functions
استعمال ڪريو x2, x3, √ (square root), and 3√ (cube root).
ياداشت جا ڪم
The calculator has 8 temporary memory buttons. Use ايس ٽي او (Store) to save a value and آر سي ايل (Recall) to retrieve it.
شمارياتي حساب
To enter statistical mode, press موڊ پوء چونڊيو اسٽيٽ. The calculator supports 1 and 2 variable statistics. Refer to the on-screen prompts for data entry and calculation of statistical values like mean, standard deviation, etc.
3. موڊ چونڊ
کي دٻايو موڊ key to switch between Normal and Statistical modes. Ensure you are in the correct mode for your calculations.
سار سنڀال
1. صفائي
To clean the calculator, gently wipe the surface with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, but ensure no liquid enters the calculator. Do not use abrasive cleaners or solvents.
2. اسٽوريج
When not in use, store the calculator in its protective hard case to prevent scratches and damage. Avoid exposing the calculator to extreme temperatures, humidity, or direct sunlight for prolonged periods.

Figure 4: The calculator shown with its durable gloss black protective hard case.
3. بيٽري مٽائڻ
As mentioned in the Setup section, replace the LR44 battery when the display becomes dim or the calculator malfunctions in low light conditions. Always dispose of old batteries according to local regulations.
مشڪلاتون
| مسئلو | ممڪن سبب | حل |
|---|---|---|
| ڊسپلي خالي يا مدھم آهي. | شمسي توانائي لاءِ ڪافي روشني نه هجڻ، يا بيٽري گهٽ هجڻ. | Move to a brighter area. Replace the LR44 battery. |
| ڪيلڪوليٽر ڪي دٻائڻ جو جواب نٿو ڏئي. | Temporary system error or low battery. | کي دٻايو ري سيٽ ڪريو button on the back of the calculator using a thin, pointed object. Ensure battery is good. |
| غلط حساب جا نتيجا. | Incorrect mode selected (e.g., DEG/RAD/GRAD, Normal/Stat), or input error. | Check the current mode settings. Review your input sequence. Perform a ري سيٽ ڪريو جيڪڏهن ضروري هجي. |
| "ERROR" message on display. | Mathematical error (e.g., division by zero, invalid function argument). | Review the calculation for mathematical validity. Press آن/سي غلطي کي صاف ڪرڻ لاء. |
وضاحتون
- ماڊل نمبر: EL531XTWH
- افعال: 273
- ڏيکاريو: وڏو 12-عددو، 2-لائن LCD
- طاقت جو ذريعو: Twin powered (Solar with LR44 battery backup)
- بيٽري جو قسم: 1 x LR44 (شامل)
- طول و عرض (L x W x H): 6.3 x 3.1 x 0.04 انچ
- شيء جو وزن: 5.6 اونس
- رنگ: ڪارو ۽ اڇو
- حساب ڪتاب جو قسم: انجنيئرنگ / سائنسي
وارنٽي ۽ سپورٽ
For product support, warranty information, or inquiries, please contact SHARP Electronics of Canada Ltd. at the following details:
- ائڊريس: 5995 Avebury Road Suite 900, Mississauga ON, L5R 3P9, Canada
- ٽيليفون: (905) 568-7140
- Webسائيٽ: www.sharp.ca
مھرباني ڪري وارنٽي دعوائن لاءِ خريد ڪرڻ جو پنھنجو ثبوت رکو.





