pūnaha tāhūrua
1. (noun) binary system.
Ko te 2 te pūtake o te pūnaha tāhūrua. E rua ngā tohutau o tēnei pūnaha (ko te 0 me te 1), ko te rua hoki te hononga o ngā wāhi uara tū (TRP 2010:213). / Two is the base of the binary system. There are two numerals of this system (0 and 1), and two is the link of the place value parts.