Using this calculator is a breeze. First, place it on a flat surface. You can use the large 12 - digit display to easily read your calculations. The cupped numeric keypad is just like those on heavy - duty models, so typing numbers will feel familiar. When you're doing calculations, you can use functions like percent change, markup, and grand total. To use the tax keys, just press them according to your needs. The 4 - key independent memory is great for storing intermediate results. For the non - add/date function, if you need to print a reference number or date, simply follow the on - screen prompts. As for rounding, you can choose standard 5/4 rounding, round up, or truncate as per your requirements. And the item count feature is handy when you want to know how many entries are in a calculation. When it comes to maintenance, keep it away from water and dust. Wipe it gently with a dry cloth if it gets dirty. Don't expose it to extreme temperatures as it may affect its performance.
