Extra big display
Larger display makes more data easier to read.
Positive values are shown in black, and negative values are shown in red for easy checking.
Key operations are stored in a buffer, so nothing is lost even during high-speed input.
Cost / Sell / Margin
Calculate the cost, selling price, or margin of profit on an item, given the other two values.
Tax & exchange function
Tax calculation and currency conversion functions.
Regular percentage calculations.
Mark-up / Mark-down
All the mark-up / mark-down capabilities of an adding machine for simplified cost and profit calculations.