the numerals of a number system which uses a
base of 2 rather than the
base of 10 used in the customary number system. The binary system uses combinations of the digits 0 and 1 to
express all other
numbers. This
results in large
strings of figures to represent a number. For
example, the number twenty would be written as 10100 in this system.
—SHSBC Binder 33 Approved Glossary