Heavy-duty commercial calculator features an easy-to-read, extra-large, 12-digit display and two independent four-key memories. Prints 4.3 lines per second in two colors. Mathematical features include 5/4 rounding, round up/down/off, item count, grand total, delta percent, auto decimal entry, mark-up/down, percent key, percent add-on/discount and variable decimal. Print/nonprint switch. Uses 2-1/4" paper.