Canon's MP49DII is a game - changer in desktop printing calculators. It features the largest fluorescent display in its class, making data viewing a breeze and minimizing errors. With two - color printing (black for positive numbers and red for negative numbers) and large color - coded keytops, calculating data is super fast and easy. This calculator comes with advanced functions like profit margin calculations, currency conversion, tax calculations, time calculations, and a built - in clock and calendar. The 14 - digit display, heavy - duty 2 - color ink ribbon printer, average function, adjustable decimal positions, and power save mode make it an ideal tool for busy professionals. The package includes the Canon MP49DII, a black/red print ribbon, an AC adapter, and a 5.7 cm paper roll.

Using the Canon MP49DII is straightforward. First, connect the AC adapter to power it up. Then, load the paper roll and the print ribbon. You can start making calculations right away. Use the large color - coded keytops for easy input. For functions like currency conversion or profit margin calculations, just press the corresponding buttons. Remember to keep the calculator in a clean and dry place. Avoid exposing it to extreme temperatures or moisture. If the print quality starts to decline, it might be time to replace the print ribbon. The power save mode will help conserve energy when the calculator is not in use. Also, make sure to use the correct decimal position setting according to your needs.