Quaternary is the base-4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number.
base 10
base 10 is a positional numeral system with ten as its base. It uses 10 different digits for representing numbers. The digits for base 10 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.