8-digit calculator is a basic calculator that can perform arithmetic calculations involving numbers with up to 8 digits. These calculators are commonly used for simple calculations in schools, offices, and homes. Some basic features of an 8-digit calculator include addition, subtraction, multiplication, and division functions, as well as memory and percentage functions. Some calculators may also include square root and negative number functions. When choosing an 8-digit calculator, you should consider factors such as the size and weight of the calculator, as well as any additional features that may be useful to you. Some calculators may have a compact design that is easy to carry in a pocket or bag, while others may have larger buttons or a larger display for easier use.