Commercial Printing/Display Calculator features a 17mm easy-to-read, fluorescent blue 10-digit display. Print 4.8 lines per second in two colors with positive numbers in black and negative numbers in red. Calculator prints up to 12 numerals and two symbols per line and three-digit punctuation. 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 total memories, tax calculations from stored tax rate memory, grand total, average keys, item counter, two-key rollover, double zero key, sign-change and right-shift key. Easy-touch keyboard offers contoured plus/equal and minus/equal keys, and multiplication, zero, and plus/equal keys are extra-large. Decimal positions are floating or fixed (6, 3, 2, 1, 0). Calculator runs on AC power.