Heavy-duty 10-Digit Calculator prints two colors at 5.2 lines per second and features a fluorescent display. Print or display an entire amortization schedule, specific month or range of months. Compute loans easily and accurately. Enter amount, term and interest rate and solve. Compute the number of days between dates or proper date. Calculator also adds, subtracts, multiplies and divides hours/minutes or minutes/seconds to compute payroll time sheets or time cards and calculate billing time. Other functions include two independent tax keys, cost/sell/margin, time/date, units price mode, delta percent (percent of change), grand total, averaging and square root function, backspace key, and automatic constants. Calculator runs on AC power.