teledata processing
1Videotex — (or interactive videotex ) was one of the earliest implementations of an end user information system . From the late 1970s to mid 1980s, it was used to deliver information (usually pages of text) to a user in computer like format, typically to be …
2Teletext — This article is about the teletext system as a whole. For the UK company whose teletext services are also branded as Teletext , see Teletext Ltd. For the obsolete communications system, see Teletex. Teletext (or broadcast teletext ) is a… …
3Radioteletype — (RTTY) is a telecommunications system consisting of two or more teleprinters using radio as the transmission medium.The term radioteletype is used to describe:* either the entire family of systems connecting two or more teleprinters over radio,… …
