- Any of several types of cable connectors used for parallel or serial cables. The number following the letters DB (for data bus) indicates the number of pins that the connector usually has; a DB-25 connector can have a maximum of 25 pins, and a DB-9 connector can have as many as 9. In practice, not all the pins (and not all the lines in the cable) may be present in the larger connectors. If your situation demands that all the lines be present, make sure you buy the right cable. Common DB connectors include the following:• DB-9Defined by the RS-449 standard as well as the ISO (International Organization for Standardization).• DB-25A standard connector used with RS-232-C wiring, with 25 pins (13 on the top row and 12 on the bottom).• DB-37Defined as the RS-449 primary channel connector.• DB-15, DB-19, and DB-50 connectors are also available. The accompanying illustration shows a male and female DB-25 connector.
Dictionary of networking . 2014.
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