![]() This type of dumb terminal is still supported on modern Unix-like systems by setting the environment variable TERM to dumb. In this context dumb terminals are sometimes dubbed glass Teletypes, for they essentially have the same limited functionality as does a mechanical Teletype. ![]() Dumb terminals are those that can interpret a limited number of control codes (CR, LF, etc.) but do not have the ability to process special escape sequences that perform functions such as clearing a line, clearing the screen, or controlling cursor position. Connection to the mainframe computer or terminal server is achieved via RS-232 serial links, Ethernet or other proprietary protocols.Ĭharacter-oriented terminals can be "dumb" or "smart". It is the most common type of data terminal, because it is easy to implement and program. These systems were initially character based.Ī Televideo ASCII character mode terminalĪ character-oriented terminal is a type of computer terminal that communicates with its host one character at a time, as opposed to a block-oriented terminal that communicates in blocks of data. This configuration, known as the centralized or mainframe model, featured a powerful central computer that performed all the processing tasks, while terminals served as input/output devices for users to interact with the system. In the early days of computing, with the advent of interactive computing, the prevailing model involved a central computer connected to multiple terminals. Examples include the family of terminal control sequence standards known as ECMA-48, ANSI X3.64 or ISO/IEC 6429. Terminals usually support a set of escape sequences for controlling color, cursor position, etc. On Unix-like operating systems, it is common to have one or more terminal windows connected to the local machine. These may be running either on the same machine or on a different one via telnet, ssh, dial-up, or over a direct serial connection. A terminal emulator inside a graphical user interface is often called a terminal window.Ī terminal window allows the user access to a text terminal and all its applications such as command-line interfaces (CLI) and text user interface (TUI) applications. Though typically synonymous with a shell or text terminal, the term terminal covers all remote terminals, including graphical interfaces. Xterm, a terminal emulator designed for the X Window System Windows Terminal, an open-source terminal emulator for Windows 10 and Windows 11Ī terminal emulator, or terminal application, is a computer program that emulates a video terminal within some other display architecture.
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