Many modern computers use USB connectors for physical connectivity to devices. Prior to USB, what interface type was normally seen on a printer as its connection to external devices?
A) DB-25
B) DB-9
C) Serial
D) Centronics
The answer: D) Centronics
36-pin Centronics connectors are almost exclusively used for legacy printer interfaces.
The incorrect answers:
A) DB-25
The printer interface on a computer was often a 25-pin D-subminiature connector used on the parallel interface. It was very common to have a DB-25 to Centronics cable for printer connectivity.
B) DB-9
C) Serial
DB-9 connectors are most often associated with serial ports. The serial ports were often used for modem or mouse connections and very rarely for specialized printers.
 |
Want to know more? Watch “Connectors and Adapters.” Every personal computer cable connector is designed to provide a specific function, and some of these capabilities have changed dramatically through the years. In this video, you’ll learn about standard computer connectors and how to use cable adapters to change gender, connect serial connections, or extend network connections. |