teletypewriter code

teletypewriter code

[¦tel·ə′tīp‚rīd·ər ‚kōd]
(communications)
Special code in which each code group is made up of five units, or elements, of equal length which are known as marking or spacing impulses; the five-unit start-stop code consists of five signal impulses preceded by a start impulse and followed by a stop impulse.