Radix

In a positional numeral system, the radix, or base, is the number of unique digits, including zero, used to represent numbers in that system. The decimal system in everyday use has a radix of ten, so ten distinct digits, zero through nine, are enough to write any number, with each digit position representing a power of ten. Computers operate internally in binary, radix two, and other bases such as octal, eight, and hexadecimal, sixteen, are also common in computing and mathematics. The word radix comes from the Latin for root, reflecting how the base functions as the root value from which every place value in the system is built. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/