Casio DH-12ET Desktop Calculator User Manual

ແນະນຳ

This manual provides detailed instructions for the proper use and maintenance of your Casio DH-12ET Desktop Calculator. Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.

ຮູບທີ 1: ດ້ານໜ້າ view of the Casio DH-12ET Desktop Calculator, showing the display and key layout.

ຄຸນສົມບັດຜະລິດຕະພັນ

The Casio DH-12ET is a versatile 12-digit desktop calculator designed for various business and personal calculations. Key features include:

• ຈໍສະແດງຜົນ LCD 12 ຕົວເລກ: Clear display with calculation command indicators and thousands separators.
• ການຄິດໄລ່ພາສີ: Dedicated functions for easy and quick calculation of tax additions or subtractions.
• ແປງສະກຸນເງິນ: Ability to convert amounts between two currencies after setting an exchange rate.
• Professional Percentage ການ​ຄິດ​ໄລ່​: Determine percentage increase and decrease with separate display of calculated values.
• Mark Up Function: Quickly determine margins and markups.
• Square Root Function: Calculate square roots.
• ເຊັນການປ່ຽນແປງ (+/-): Easily switch between positive and negative values.
• Total Sum Memory (GT): Automatically stores the sum of all calculation results.
• 3-Key Memory: Independent memory functions (M+, M-, MRC) for storing and recalling values.
• Solar/Battery Operated: Dual power source for reliable operation.
• ປິດເຄື່ອງອັດຕະໂນມັດ: ປະຢັດອາຍຸການໃຊ້ງານຂອງແບັດເຕີຣີໂດຍການປິດເຄື່ອງຫຼັງຈາກບໍ່ມີການເຄື່ອນໄຫວເປັນເວລາ 6 ນາທີ.
• Memory Protection Battery: Retains stored data (e.g., currency rates, tax rates) during power loss or battery change.
• ຕີນຢາງ: ໃຫ້ຄວາມໝັ້ນຄົງໃນໜ້າຜິວຕ່າງໆ.

ຕັ້ງຄ່າ

ການສະຫນອງພະລັງງານ

The Casio DH-12ET calculator operates on a dual power system: solar power and a single LR44 button cell battery. The solar panel provides power in well-lit environments, while the battery acts as a backup in low light conditions or when the solar power is insufficient. The battery also serves as a memory protection battery.

ການຕິດຕັ້ງ/ປ່ຽນແບັດ

The calculator comes with one LR44 battery pre-installed. If the display becomes dim or unresponsive in low light, the battery may need replacement.

1. ໃຫ້ແນ່ໃຈວ່າເຄື່ອງຄິດເລກຖືກໝຸນແລ້ວ ປິດ.
2. ຊອກຫາຊ່ອງໃສ່ຫມໍ້ໄຟຢູ່ດ້ານຫຼັງຂອງເຄື່ອງຄິດເລກ.
3. ໂດຍໃຊ້ screwdriver ຂະຫນາດນ້ອຍ, ເອົາ screw ຍຶດຝາປິດຊ່ອງຫມໍ້ໄຟ.
4. Carefully remove the old LR44 battery.
5. Insert a new LR44 battery with the positive (+) side facing upwards.
6. ປ່ຽນຝາປິດຊ່ອງໃສ່ໝໍ້ໄຟ ແລະຍຶດມັນດ້ວຍສະກູ.

ໝາຍເຫດ: Dispose of used batteries according to local regulations. Do not expose batteries to excessive heat or fire.

ຄໍາແນະນໍາການດໍາເນີນງານ

ການຄິດໄລ່ພື້ນຖານ

• ເພີ່ມ: ໃສ່ຕົວເລກທໍາອິດ, ກົດ +, ໃສ່ຕົວເລກທີສອງ, ກົດ =.
• ການຫັກລົບ: ໃສ່ຕົວເລກທໍາອິດ, ກົດ -, ໃສ່ຕົວເລກທີສອງ, ກົດ =.
• ການຄູນ: ໃສ່ຕົວເລກທໍາອິດ, ກົດ x, ໃສ່ຕົວເລກທີສອງ, ກົດ =.
• ພະແນກ: ໃສ່ຕົວເລກທໍາອິດ, ກົດ ÷, ໃສ່ຕົວເລກທີສອງ, ກົດ =.
• ລຶບລ້າງລາຍການ: ກົດ C to clear the last entered number.
• All Clear: ກົດ AC to clear all entries and reset the calculator.

ການຄິດໄລ່ອາກອນ

The calculator allows for easy addition or subtraction of a pre-set tax rate.

1. Setting the Tax Rate:
   • ກົດ AC ແລະຖື % key until "SET" appears on the display.
   • ກົດ ອັດຕາພາສີ (which is the TAX+ ກຸນແຈ).
   • Enter the desired tax rate (e.g., 8 for 8%).
   • ກົດ % to confirm and save the tax rate.
2. Adding Tax: ໃສ່ຈຳນວນເງິນ, ຈາກນັ້ນກົດ TAX+. The display will show the amount with tax added.
3. Subtracting Tax: Enter the amount with tax, then press ພາສີ-. The display will show the original amount before tax.

ຮູບທີ 2: Steps for changing the tax rate on the Casio DH-12ET calculator.

ແປງສະກຸນເງິນ

The calculator supports conversion between a local currency and a foreign currency (e.g., Euro).

1. Setting the Exchange Rate:
   • ກົດ AC ແລະຖື % key until "SET" appears.
   • ກົດ ອັດຕາ (which is the ເອີໂຣ ກຸນແຈ).
   • Enter the exchange rate (e.g., 1.25 if 1 Local unit = 1.25 Euro).
   • ກົດ % to confirm and save the rate.
2. Converting Local to Foreign: Enter the local amount, then press ເອີໂຣ.
3. Converting Foreign to Local: Enter the foreign amount, then press ທ້ອງຖິ່ນ.

ເປີເຊັນtage ການຄິດໄລ່

• Calculate Percentage of a Number: Enter number, press x, enter percentage value, press %. (e.g., 100 x 15 % = 15)
• Add Percentage: Enter number, press +, enter percentage value, press %. (e.g., 100 + 15 % = 115)
• Subtract Percentage: Enter number, press -, enter percentage value, press %. (e.g., 100 - 15 % = 85)

ຟັງຊັນຄວາມຈໍາ

• M+: ເພີ່ມຄ່າທີ່ສະແດງໃຫ້ກັບຫນ່ວຍຄວາມຈໍາ.
• M-: ລົບຄ່າທີ່ສະແດງອອກຈາກຫນ່ວຍຄວາມຈໍາ.
• MRC:
  • Press once to recall the value stored in memory.
  • Press twice to clear the memory (M indicator disappears).
• GT (Grand Total):
  • Automatically accumulates results of calculations (e.g., after pressing = or %).
  • ກົດ GT ເພື່ອສະແດງຜົນລວມທັງໝົດ.
  • ກົດ AC to clear the grand total memory.

ຟັງຊັນອື່ນໆ

• √ (ຮາກ​ສີ່​ຫຼ່ຽມ​)​: ໃສ່ຕົວເລກ, ຈາກນັ້ນກົດ √ to calculate its square root.
• +/- (ການປ່ຽນຊື່): ປ່ຽນສັນຍາລັກຂອງຕົວເລກທີ່ສະແດງຈາກບວກເປັນລົບຫຼືໃນທາງກັບກັນ.
• Decimal Selector (F CUT 5/4, 4 3 2 1 0 ADD2):

  This slider switch controls the decimal point and rounding settings:

  • F (ລອຍ): Decimal point floats, displaying all digits.
  • ຕັດ: Truncates results to the specified number of decimal places.
  • 5/4: Rounds results to the specified number of decimal places (standard rounding).
  • 4, 3, 2, 1, 0: Specifies the number of decimal places (e.g., '2' for two decimal places).
  • ADD2: Automatically adds two decimal places for currency calculations.

ບໍາລຸງຮັກສາ

ທໍາຄວາມສະອາດ

To clean the calculator, wipe it gently with a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water and a mild detergent, then wipe dry immediately. Do not use strong solvents, abrasive cleaners, or spray cleaners directly onto the calculator.

ການເກັບຮັກສາ

ເກັບຮັກສາເຄື່ອງຄິດເລກໄວ້ໃນບ່ອນທີ່ເຢັນ, ແຫ້ງແລ້ງຫ່າງຈາກແສງແດດໂດຍກົງ, ອຸນຫະພູມທີ່ຮຸນແຮງ, ແລະຄວາມຊຸ່ມຊື່ນສູງ. ຖ້າເກັບຮັກສາໄວ້ເປັນເວລາດົນ, ແນະນໍາໃຫ້ຖອດຫມໍ້ໄຟອອກເພື່ອປ້ອງກັນການຮົ່ວໄຫຼ.

ການແກ້ໄຂບັນຫາ

• ຈໍສະແດງຜົນແມ່ນມືດ ຫຼືຫວ່າງເປົ່າ:
  • Ensure the calculator is in a well-lit area for solar power.
  • Check the battery. Replace the LR44 battery if it is depleted.
• ຜົນ​ການ​ຄິດ​ໄລ່​ທີ່​ບໍ່​ຖືກ​ຕ້ອງ​:
  • ກົດ AC to clear all previous calculations and memory.
  • Verify the decimal selector switch setting.
  • Check if any memory functions (M, GT) are active and interfering.
• ປຸ່ມບໍ່ຕອບສະໜອງ:
  • ໃຫ້ແນ່ໃຈວ່າເຄື່ອງຄິດເລກເປີດຢູ່.
  • ອະນາໄມອ້ອມກະແຈເພື່ອເອົາສິ່ງເສດເຫຼືອໃດໆອອກ.
  • ຖ້າບັນຫາຍັງຄົງຢູ່, ລອງປ່ຽນແບັດເຕີຣີ.

ຂໍ້ມູນຈໍາເພາະ

ຮູບທີ 3: ຂ້າງ view of the Casio DH-12ET calculator with approximate dimensions.

ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ

For information regarding warranty coverage, service, or technical support for your Casio DH-12ET Desktop Calculator, please refer to the warranty card included with your product or visit the official Casio webເວັບ​ໄຊ​ສໍາ​ລັບ​ພາກ​ພື້ນ​ຂອງ​ທ່ານ​. ລາຍລະອຽດການຕິດຕໍ່ສໍາລັບການບໍລິການລູກຄ້າໂດຍທົ່ວໄປແມ່ນມີຢູ່ໃນຜູ້ຜະລິດ webເວັບໄຊ.

ຢ່າງເປັນທາງການຂອງ Casio Webເວັບໄຊ: www.casio.com