TTY may refer to:

Communications and technology

Teleprinter A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point (telecommunications), point-to-point and point- ...

or teletypewriter (TTY), an electromechanical typewriter paired with a communication channel ** Sometimes used more generally for any type of

computer terminal A computer terminal is an electronic or electromechanical hardware device that can be used for entering data into, and transcribing data from, a computer or a computing system. Most early computers only had a front panel to input or display ...

*** May also be used to refer to a

virtual console The Virtual Console was a line of downloadable retro video games for Nintendo's Wii and Wii U home video game consoles and the Nintendo 3DS family of handheld systems. The Virtual Console lineup consisted of titles originally released on pa ...

Unix-like A Unix-like (sometimes referred to as UN*X, *nix or *NIX) operating system is one that behaves in a manner similar to a Unix system, although not necessarily conforming to or being certified to any version of the Single UNIX Specification. A Uni ...

operating systems An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

* Another name for a

telecommunications device for the deaf A telecommunications device for the deaf (TDD) is a teleprinter, an electronic device for text communication over a telephone line, that is designed for use by persons with hearing or speech difficulties. Other names for the device include te ...

(TDD), a teleprinter designed for persons with hearing or speech difficulties *

tty (Unix) In computing, tty is a command in Unix and Unix-like operating systems to print the file name of the terminal connected to standard input. tty stands for TeleTYpewriter. Usage The tty command is commonly used to check if the output medium is ...

, a command found in Unix-like operating systems

Other uses

Tampere University of Technology Tampere University of Technology (TUT) () was Finland's second-largest university in engineering sciences. The university was located in Hervanta, a suburb of Tampere, Finland, Tampere. It was merged with the University of Tampere to create the ...

(Tampereen Teknillinen Yliopisto), in Finland * Torque-to-yield fastener {{Disambiguation