dTR

DTR is an acronym with multiple meanings across different fields. The most technical and widely recognized is Data Terminal Ready, a control signal used in serial communications.

In serial interfaces such as RS-232, DTR stands for Data Terminal Ready. It is asserted by the Data Terminal Equipment (for example, a computer or terminal) to indicate it is ready to communicate with the connected device, typically a Data Circuit-terminating Equipment like a modem. DTR is one of several handshaking signals that help establish and maintain a connection, and its state can influence actions on the remote device, such as answering, maintaining a link, or resetting certain hardware. In practice, DTR is also used in hardware design to implement auto-reset mechanisms for microcontrollers; toggling DTR through a capacitor can trigger a reset.

Daily Time Record is another common meaning, especially in human resources and payroll. In many organizations, particularly in Southeast Asia, the Daily Time Record tracks the hours an employee has worked each day and is used to calculate pay, attendance, and leaves. DTR systems can be paper-based or digital and are often integrated with payroll software.

Define The Relationship is a widely used slang term in dating culture and online discourse. It describes the informal understanding between two people about the nature and boundaries of their romantic involvement. The term has gained broad visibility in media and popular discussions about modern dating.

Other uses exist in fields such as education or project management, where DTR may stand for different phrases. Context is essential to determine the intended meaning.