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