Heavyduty printing calculator offers two memories, two independent tax keys, and a 14digit, fluorescent display Print 52 lines per second in two colors Easily calculate and print loan calculations, amortization schedule, presentfuture 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 costsellmargin 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 builtin metal paper arm Calculator runs on AC power