Heavy-duty printing calculator offers two memories, two independent tax keys, and a 14-digit, fluorescent display. Print 5.2 lines per second in two colors. Easily calculate and print loan calculations, amortization schedule, present/future value, and days between dates. You can add, subtract, multiply and divide hours and minutes or minutes and seconds for time billing or payroll applications. Enter two cost/sell/margin variables, and the third appears. Other functions include delta percent, units price mode, grand total, sigma, change sign key, item count with averaging and square root. Design features a backspace key and built-in metal paper arm. Calculator runs on AC power.