Casio DJ-220D Plus Desktop Calculator

300 Steps Check Review up to 300 calculation steps. Auto Review Auto Review by pressing one single button! CORRECT While reviewing a calculation, you can make changes in values and operators and re-execute to obtain a new result. GO TO Jump to a particular calculation step by pressing one single button. Insert / Delete You can add steps to or delete steps from Calculation Memory. Note that if the number of steps in Calculation Memory exceeds 300, you will not be able to review them later. Answer Memory Recall a previous calculation result and use it in the next calculation! Double Check Compare the results of two calculations! 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.