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