In [[telecommunication]], a '''paired disparity code''' is a [[code]] in which some or all of the characters are represented by two sets of digits of opposite [[disparity]] that are used in [[sequence]] so as to minimize the total disparity of a longer sequence of digits.
<i>Note 1:</i> An [[alternate mark inversion signal]] is an implementation of a paired disparity code.
<i>Note 2:</i> The digits may be represented by disparate physical quantities, such as two different frequencies, phases, voltage levels, magnetic polarities, or electrical polarities, each one of the pair representing a 0 or a 1.
Source: from [[Federal Standard 1037C]] and from [[MIL-STD-188]]
