# Two-out-of-five code

In telecommunication, a**two-out-of-five code**is a binary-coded decimal notation in which (a) each decimal digit is represented by a binary numeral consisting of five binary digits of which two are of one kind, called

*"ones,"*and three are of the other kind, called

*"zeros"*and (b) the usual weights assigned to the digit positions are 0-1-2-3-6, except that

*"zero"*is represented as 01100.

**Source:** From Federal Standard 1037C