binary
adjective
uk/ˈbaɪnəri/ us IT
relating to a system of counting, used in computers, in which only the numbers 0 and 1 are used:
the binary system
based on only two numbers:
a binary code/digit/number
consisting of two parts:
The markets face a simple binary decision - stay or go.
binary
noun [ U ]
IT
All computer equipment deals only in binary.