A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send … See more

Teleprinters could use a variety of different communication channels. These included a simple pair of wires, public switched telephone networks, dedicated non-switched telephone circuits (leased lines), switched n… See more

Most teleprinters used the 5-bit International Telegraph Alphabet No. 2 (ITA2). This was limited to 32 codes (2 = 32). One had to use "FIGS" (for "figures") and "LTRS" (for "letters") keys to shift state, for a combined character set sufficient … See more

British Creed & Company built teleprinters for the GPO's teleprinter service.
• Creed model 7 (page printing teleprinter introduced in 1931)
• Creed model 7B (50 baud page printing teleprinter)… See more

A global teleprinter network called Telex was developed in the late 1920s, and was used through most of the 20th century for business communications. The main difference from a standard teleprinter is that Telex inclu… See more

In addition to the 5-bit Baudot code and the much later seven-bit ASCII code, there was a six-bit code known as the Teletypesetter code (TTS) used by news wire services. It was first demonstrated in 1928 and began to see wide… See more

Computers used teleprinters for input and output from the early days of computing. Punched card readers and fast printers replaced teleprinters for most purposes, but teleprinters continued to be used as interactive … See more