12-digit commercial calculator features two-color printing, extra-large 17mm fluorescent blue display, automatic three digit punctuation, and item counter display. Print 4.8 lines per second with positive numbers in black and negative number in red. Calculator also prints up to 12 numerals and three symbols. Date key prints the date. Use the grand total key to add the grand total of several calculations such as the total prices x units on an invoice. Multiple Use key simplifies business calculations to save time and increase efficiency by handling functions like margin, markup, selling prices, costs, and percent changes. Other functions include two independently accessible four-key and grand memories, tax calculations from stored tax rate memory, automatic first factor accumulation, average key, item counter, two-key rollover, double zero key, sign change key, and right-shift key. Decimal positions are floating or fixed (6, 3, 2, 1, 0). Calculator runs on AC operation.

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