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Line 1: ~~<sub><sub>Subscript text</sub><sub><sub>Subscript text</sub></sub></sub>~~'''Data Terminal Ready''', abbreviated as '''DTR''', is a [[control signal]] present inside an [[RS-232]] serial communications cable that goes between a computer and another device, such as a modem. This is a one-way "high-low" signal going from the computer to the modem (or, in RS-232 terminology, "from DTE to DCE"). It is present on pin 4 of a [[DE-9]] serial port, or pin 20 of a [[DB-25]] port.

Data Terminal Ready: Difference between revisions