What Does Binary Mean?

In general, binary describes anything that is made up of two things or parts. In the context of information technology, binary is a base-2 numbering system that uses the numerals 0 and 1 for counting. It is used by digital computers to perform calculations from the simplest to the most complex.

Techopedia Explains Binary

As the essayist Brian Hayes explained in a column in the American Scientist magazine, “People count by tens and machines count by twos.” Digital computers have used the binary numbering scheme since the development of electronic computing in the mid-20th century. While other systems have been attempted, such as base-3 or base-10, binary is ubiquitous in the computing field.