Regular percentage calculations	300 steps check 300 steps check Displays up to 300 previous calculation steps
Recheck function	The recheck function allows confirmation of errors by sound when checking calculations. If the user presses an incorrect key when performing a second calculation to check calculation results, a buzzer sounds to alert the user of the error.
Tax calculation	Automatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount
Solar & Battery	Solar powered when light is sufficient, battery powered when light is insufficient
Function command signs	A symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing
Key rollover	Key operations are stored in a buffer, so nothing is lost even during high-speed input.
Extra Large display	Larger display makes more data easier to read
Plastic keys	Designed and engineered for easy operation
Mark-up	All the mark-up capabilities of an adding machine for simplified cost and profit calculations.
Metal Faceplate	Tough cover stands up to rough treatment
Localized number display	Displays numbers in four digit separator formats(Type A, Type B, Type C and Indian).

Casio Calculator DJ-220D Plus

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