The ELDP9001 Paperless Printing Calculator is a unique and powerful calculator, perfect for those that need the power of a printing calculator with the functionality of a desktop calculator. It features a 12 digit display with a 5 line scrolling LCD display. This larger scrolling display allows a user to go back and view up to 300 previous entries. The Check & Correct functions allow for changes to be made to previous entries if a mistake was made or if a calculation needs to be updated. The Paperless Printing Calculator is whisper quiet, making it usable in any office environment. Other features include Cost/Sell/Margin, 4 key memory, tax keys, change sign key, backspace key, and selectable decimal and rounding keys.