Desktop Printing Calculator offers a large fluorescent display, two-color ribbon printing, and averaging and pairing calculations. Prints 4.8 lines per second with positive numbers in black and negative numbers in red. Use 2-1/4" wide plain paper roll. Functions include decimal positions (+, 0, 2, 3, 4, 6, Floating, +1, +2), delta percentage calculation, up/off/down rounding, item count, markup/markdown, independent memory with accumulation capability, constant multiplication and division, and averaging and pairing calculation.