Casio MJ-120D PLUS Office Calculator - 12-Digit Display
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Full details
The Casio MJ-120D Plus is a reliable desktop calculator designed for everyday office tasks, offering a clear 12-digit display and essential functions like tax calculation. It's ideal for professionals needing straightforward calculations, though its basic nature means it lacks advanced scientific or financial functions. Key features include a large LCD screen, dual power (solar/battery), and a 3-key memory.
All features
| Model Part Number | MJ-120D PLUS |
|---|---|
| Brand | CASIO |
Extended Product Information
FAQs
What type of battery does the Casio MJ-120D Plus use?
It uses one LR44 battery, and also features solar power.
How do I perform a tax calculation?
The calculator has dedicated tax+ and tax- keys. Enter the base amount, press tax+, enter the tax rate percentage, and it will add the tax. For subtracting tax, use tax-.
What is the 'Check & Correct' function?
This function allows you to review up to 300 previous entries and correct any mistakes without having to re-enter the entire calculation from the beginning. The 'Recheck' function provides an audible confirmation.
Does the display have a backlight?
No, the MJ-120D Plus features an LCD display that does not have a backlight.
What are the dimensions and weight of the calculator?
The dimensions are approximately 28.6 mm (height) x 126.5 mm (width) x 148 mm (depth), and it weighs about 140 g.
Can this calculator perform square root calculations?
Yes, it includes a square root function accessible via the dedicated key.
How long does the battery typically last?
The battery life is rated at approximately 3 years under normal usage conditions, with the solar power feature helping to extend its operational life.
Troubleshooting
Display is blank or faint
Ensure the solar panel is exposed to adequate light. If using battery power, replace the LR44 battery.
Keys are unresponsive
Check if the battery needs replacement. Ensure there is no debris stuck under the keys. If the issue persists, contact support.
Incorrect calculations
Verify that all numbers and operations are entered correctly. Use the 'Check' and 'Recheck' functions to review your input. Ensure you are using the correct functions for tax, percentage, or memory.
Calculator turns off unexpectedly
This is likely due to the auto power-off feature. Simply press any key to reactivate it. If it powers off immediately after use, ensure the battery is functional.
Pros and Cons
Pros
- Clear and large 12-digit LCD display
- Dual power source (solar and battery) for reliability
- Convenient tax calculation function
- Durable plastic keys and robust build
- Helpful check and correct functions for accuracy
- Auto power-off feature to save battery
Cons
- Lacks advanced scientific or financial functions
- No backlight for the display
- Display does not tilt
- Basic design may not suit complex analytical needs
- No cover included for protection
Setup, Compatibility & Care
Setup:
The calculator is ready to use out of the box. Ensure the solar panel is exposed to light for optimal performance. If the display is dim or unresponsive, replace the LR44 battery (1x required). To replace the battery, carefully open the battery compartment on the back of the unit.
Compatibility:
This is a standalone electronic device and does not require compatibility with other systems or software. It functions independently.
Care:
- Keep the calculator dry and away from liquids.
- Clean the housing and keys with a soft, dry or slightly damp cloth. Avoid abrasive cleaners.
- Do not attempt to disassemble the unit, as this can cause damage and void any warranty.
- Store in a cool, dry place when not in use.
- Periodically check the battery and replace it when necessary to maintain performance.