Noun
teletypewriter (plural teletypewriters)
Synonym of teletype (“telegraph that automatically prints transmited messages in letters rather than Morse code or other symbols”).
According to a chapter in the "RTTY Handbook", text images have been sent via teletypewriter as early as 1923. citation However, none of the "old" RTTY art has been discovered yet. Source: Internet
A teleprinter (teletypewriter, Teletype or TTY) is an electromechanical typewriter that can be used to send and receive typed messages from point to point and point-to-multipoint over various types of communications channels. Source: Internet