ຄູ່ມືການໃຊ້ງານເຄື່ອງຄິດເລກທຸລະກິດ Aurora DT661

1. ບົດແນະນຳ

Thank you for choosing the Aurora DT661 Business Calculator. This manual provides detailed instructions on how to set up, operate, and maintain your calculator to ensure optimal performance. The DT661 is designed for business and financial calculations, featuring a large 12-digit display, durable metal casing, and specialized functions like Cost-Sell-Margin and Tax calculations.

Figure 1: Aurora DT661 Business Calculator Overview

2. ຕັ້ງຄ່າ

2.1 ແຫຼ່ງພະລັງງານ

The Aurora DT661 calculator operates using both solar power and a single product-specific alkaline battery (included). For optimal performance, ensure the solar panel is exposed to sufficient light. The battery provides power in low-light conditions or when solar power is insufficient.

2.2 ການນໍາໃຊ້ເບື້ອງຕົ້ນ

Upon first use, or after extended storage, the display may be blank. Place the calculator in a well-lit area to activate the solar power, or press the 'AC' button to clear any residual memory and ensure the display is active.

3. ຄໍາແນະນໍາການດໍາເນີນງານ

3.1 ການດຳເນີນງານທາງຄະນິດສາດພື້ນຖານ

Perform standard calculations using the number keys (0-9, 00, .), and operation keys (+, -, X, ÷, =).

• ເພີ່ມ (+): Enter first number, press '+', enter second number, press '='.
• ການຫັກລົບ (-): Enter first number, press '-', enter second number, press '='.
• ການຄູນ (X): Enter first number, press 'X', enter second number, press '='.
• ພະແນກ (÷): Enter first number, press '÷', enter second number, press '='.

3.2 Clear Functions

• AC (ທັງໝົດທີ່ຊັດເຈນ): Clears all entries and memory, resetting the calculator to its initial state.
• C/CE (Clear Entry/Clear): Clears the last entered number. Pressing it twice typically clears the entire calculation without affecting memory.

3.3 ໜ້າທີ່ພິເສດ

• Cost-Sell-Margin (CSM): This function allows you to calculate any one of Cost, Selling Price, or Margin when the other two values are known.
• Tax Function (+TAX, -TAX): Ideal for VAT calculations.
• Programmable Currency Conversion: Allows setting a conversion rate for quick currency exchanges. Refer to the detailed instructions in the product packaging for setting specific rates.
• Memory Functions (M+, M-, MRC):
  • M+: ເພີ່ມຄ່າທີ່ສະແດງໃສ່ໜ່ວຍຄວາມຈຳ.
  • M-: ຫັກຄ່າທີ່ສະແດງອອກຈາກໜ່ວຍຄວາມຈຳ.
  • MRC (ການເອີ້ນຄືນຄວາມຊົງຈໍາ / ລຶບ): Press once to recall the memory value. Press twice to clear the memory.
• ເປີເຊັນtage (%): ຄິດໄລ່ເປີເຊັນtages.
• ຮາກຂັ້ນສອງ (√): ຄິດໄລ່ຮາກທີ່ສອງຂອງຕົວເລກທີ່ສະແດງ.
• +/- (ການປ່ຽນຊື່): ປ່ຽນສັນຍາລັກຂອງຕົວເລກທີ່ສະແດງ (ບວກເປັນລົບ, ຫຼືລົບເປັນບວກ).

4. ບໍາລຸງຮັກສາ

4.1 ການທໍາຄວາມສະອາດ

To clean the calculator, use a soft, dry cloth. For stubborn marks, a slightly damp cloth with mild soap can be used, but ensure no liquid enters the calculator. Do not use abrasive cleaners or solvents.

4.2 ການທົດແທນຫມໍ້ໄຟ

While the calculator is primarily solar-powered, the included alkaline battery provides backup. If the display becomes dim or unresponsive in low light, the battery may need replacement. Refer to the battery compartment on the back of the unit for specific battery type and replacement instructions.

4.3 ການເກັບຮັກສາ

ເກັບຮັກສາເຄື່ອງຄິດເລກໄວ້ໃນບ່ອນທີ່ເຢັນ, ແຫ້ງ, ຫ່າງຈາກແສງແດດໂດຍກົງ ແລະອຸນຫະພູມທີ່ຮຸນແຮງເມື່ອບໍ່ໄດ້ໃຊ້ເປັນເວລາດົນ.

5. ການແກ້ໄຂບັນຫາ

• ຈໍສະແດງຜົນຫວ່າງເປົ່າ ຫຼືມືດ:
  • Ensure the solar panel is exposed to sufficient light.
  • The battery may be low or depleted. Replace the battery if necessary.
  • Press the 'AC' button to reset the display.
• ການ​ຄິດ​ໄລ່​ທີ່​ບໍ່​ຖືກ​ຕ້ອງ​:
  • Ensure correct input sequence.
  • Clear previous calculations using 'AC' or 'C/CE'.
  • Check if memory (M) is active and clear it if not intended.
• ປຸ່ມບໍ່ຕອບສະໜອງ:
  • Ensure the calculator is clean and free of debris around the keys.
  • Press 'AC' to reset the unit.

6. ຂໍ້ມູນຈໍາເພາະ

7. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ

For information regarding warranty coverage and customer support, please refer to the warranty card included with your product packaging or visit the official Aurora webເວັບໄຊ. ຮັກສາໃບຮັບເງິນການຊື້ຂອງທ່ານໄວ້ເປັນຫຼັກຖານການຊື້ສໍາລັບການຮຽກຮ້ອງການຮັບປະກັນໃດໆ.