The TA Adler-Royal 1228 PD plus printing calculator features a 12 digit LED display. It has an add-on discount capability and round up/off/down capability. The TA Adler-Royal 1228 PD plus printing calculator has percentage function, square root, time calculation and more. Shop online and then place an order for your printing calculator and other personal home and small business item. We do not have scientific calculators at the present but we do have paper shredders, luggage tags, employee time clocks, pencil sharpeners, cash registers, toner cartridges, typewriters, electronic organizers and postal scales. Click on our web site at www.royal.com for price information and more!