CASIO MJ-100DA (01) PDF DOCUMENT

• If you suspect that the CASIO MJ-100DA is operating abnormally due to static electrical charge or some other problem, press [ON/AC] to restore normal operation.

• Avoid dropping the calculator and otherwise subjecting it to severe impact.

• Never bend or twist the case.

• Never try to take the calculator apart.

• Wipe the unit with a soft, dry cloth to clean it.

• The step indicator on the display shows the number of the current calculation step.

• A finalize key operation ([=], [%], [M+], [M-]) and the result it produces is also a step.

• Steps are accumulated in Calculation Memory up to 150 steps. Even if a finalize key is pressed, steps continue to accumulate until you press the [ON/AC] key or reach the 150-step limit.

• The Review function can be used to view only the first 150 steps in Calculation Memory, even if more steps exist.

• The Review function cannot be performed while an error indicator is displayed.

• Pressing the [ON/AC] key clears all steps from Calculation Memory and restarts the step count from 1.

Finalizing a calculation means performing a key operation that produces a calculation result. Pressing any of the following keys on your CASIO MJ-100DA will finalize a calculation: [=], [%], [M+], [M-].

The CASIO MJ-100DA features a Two-Way Power System, which uses a solar cell and one LR44 button type battery, allowing it to provide power even in complete darkness.

The calculator is not equipped with an OFF switch. It switches power off automatically about six minutes after the last key operation. To restore power, press [ON/AC].

When you restore power by pressing [ON/AC], the independent memory contents are not cleared. If the calculator turns off during a Review operation, pressing [ON/AC] will return you to the point where you were before it powered off.

Power Supply: Two-Way Power System, with solar cell and one LR44 button type battery

Battery Life: Approximately 3 years (1 hour operation per day)

Operating Temperature: 0°C to 40°C (32°F to 104°F)

Dimensions: 30.1 (H) × 123 (W) × 140 (D) mm (13⁄16″ H × 4¹³/₁₆” W × 5¹/₂” D)

Weight: Approximately 130 g (4.6 oz), including battery

Below are examples of basic calculations you can perform on your CASIO MJ-100DA. Note that a step indicator also appears on the display. A “GT” indicator appears when a value is stored in the grand total memory.

Calculation	Key Operation	Display
63 × 5 + 2.4 – 1 = 11.4	63 [×] 5 [+] 2.4 [-] 1 [=]	11.4
2 × (-3) = -6	2 [×] 3 [+/-] [=]	-6.
Constant Calculations: 1+5=6, 3+5=8	5 [+] [+] 1 [=] … 3 [=]	6. … 8.
Constant Calculations: 7-6=1, 2-6=-4	6 [-] [-] 7 [=] … 2 [=]	1. … -4.
Constant Calculations: 3×2=6, 4×2=8	2 [×] [×] 3 [=] … 4 [=]	6. … 8.
Constant Calculations: 15÷3=5, 21÷3=7	3 [÷] [÷] 15 [=] … 21 [=]	5. … 7.
√4 × 5 = 10	4 [√] [×] 5 [=]	10.
Percentage: 100 × 5% = 5	100 [×] 5 [%]	5.
Percentage: 100 + (100 × 5%) = 105	100 [+] 5 [%]	105.
Percentage: 10 – (10 × 20%) = 8	10 [-] 20 [%]	8.
Percentage: 30 is what percent of 60? (50%)	30 [÷] 60 [%]	50.
Mark-up: Find the price ($640) if cost is $480 and margin is 25%. Find the profit ($160).	480 [MU] 25 [%] … [=]	640. … 160.
Memory Calculation: 8 × 9 = 72 -) 5 × 6 = 30 2 × 3 = 6 Total = 48	8 [×] 9 [M+] 5 [×] 6 [M-] 2 [×] 3 [M+] [MRC]	72. 30. 6. 48.
Grand Total Memory: 5 × 6 = 30 2 × 8 = 16 Total = 46	5 [×] 6 [GT] 2 [×] 8 [GT] [GT]	30. 16. 46.

To clear the grand total memory, press the [GT] key twice.

The CASIO MJ-100DA uses the Indian system of digit grouping (lakhs and crores) and can switch to a standard grouping system.

To adjust the format:

1. Press and hold down [SET] until SET appears.

2. While continuing to hold down [SET], press [▶] to select a format. The currently selected format is indicated by commas on the display.

3. Repeat step 2 to select the other format. When you press [ON/AC], the indicators disappear and the setting is saved.

You can also press [DISP] to toggle between the two available numeric display formats at any time.

Setting a Tax Rate (Example: 10%)

1. Press and hold [TAX %] until “SET” appears on the display.

2. Enter the tax rate: 10.

3. Press [TAX %] again to store the rate.

You can check the currently set rate by pressing [AC] and then [TAX %].

Calculating Price-Plus-Tax (Example: Tax is 10%)

To find the price plus tax for $150, enter 150 and press [TAX+]. The display will show 165. The tax amount (15) is also shown after pressing the key again.

Calculating Price-Less-Tax (Example: Tax is 10%)

To find the price without tax for $165, enter 165 and press [TAX-]. The display will show 150. The tax amount (15) is also shown after pressing the key again.

Important: Before you can revise steps in Calculation Memory, you must first finalize the calculation by pressing [=], [%], [M+], or [M-].

To Review and Edit a Calculation:

1. After inputting and finalizing a calculation (e.g., (20 – 5) × 2 = 5), press [◀] or [▶] to enter Review mode. The display will show the last step of the calculation.

2. Use [◀] and [▶] to scroll through the calculation steps.

3. To make a correction, navigate to the step you want to change. For example, to change ‘5’ to ‘6’, scroll to the step showing ‘5’, input ‘6’, and then press [▶] to move to the next step. The calculator will automatically re-calculate and show the new result.

4. To exit the Review mode, press [AC] or [=].

Notes on Revising a Calculation:

• Pressing [▶] or [◀] reviews starting from the first or last step, while holding down either key scrolls at high speed.

• You can edit an incorrect number, operator, or function. To change 20 to 22, for example, input ’22’. To change ‘+’ to ‘-‘, press the [-] key.

• The [CORRECT] indicator is on the display while Calculation Memory editing is enabled.

• The contents of Calculation Memory are cleared when you press [ON/AC] or perform tax rate setting.

• You can edit only one step.

• If you want to change the operation, press the correct key. You cannot change a number to an operation.

• When the result is already produced by the calculation, you cannot change a key inputting a number.

• If an error occurs while you are inputting a number or calculation, the number and decimal point input becomes invalid. Correct the entry and then continue.

• When you start the editing operation and then once again try to enter more than the allowable number of digits, the initial digits of the input value are truncated and only the last input digits remain valid.

• When you edit the contents of a calculation, the rounding and decimal place settings are not applied. You need to make these settings again after completing the editing operation.

• The calculation speed depends on the number of steps accumulated in Calculation Memory.