The behavior of each is different. Proud to be featured: "What's Hot" Add, subtract, multiply and divide numbers up to five decimal places, keeps a running total and a virtual "tape." - Virtual tape visible & scrollable while adding - Touch/Hold number entry display area to copy/paste - Edit mode allows you to delete individual rows - Touch an number in your tape to copy directly to number display area - Export tape as text or C.S.V. File (Comma Separated Value) - Save multiple tapes - Undo an unlimited number of times * Customize * - Optional decimal behavior: stays in fixed location as you enter numbers or traditional hit decimal key - Alternate large Zero key or small '0' and '00' keys - Option: add line numbers to tape - Option: set number of Clear Entry touches before tape is cleared