What is a db-9 serial connector used for on a laptop?
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I have a question below;
What is a db-9 serial connector used for on a laptop?
A) Connecting a printer
B) Connecting a mouse
C) Connecting a keyboard
D) Connecting a monitor
Answer: A) Connecting a printer. A db-9 serial connector is a type of connector that is used on laptops to connect a printer to the laptop. Db-9 serial connectors are 9-pin connectors that transmit data one bit at a time and are typically used for older printers and other devices that do not require high-speed data transmission.I am getting DB-9 mixed up with a computer monitor, DB-9 has nine pins, VGA has 15 pins. I am surprised it is a printer, and the laptop would be very old. Some people do have a need to connect a laptop to a dot matrix/impact printer. I know serial ports have a lot more pins, and old printers plug into those. What is the difference between a serial port and DB-9?
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@Robert-Perrett great question, the DB is the "D-subminiature" or "D-Sub" form, with a 9-pin arrangement. Remember that DB is a form factor, and does not define what it is used for. Here is a great little article that might help you out with that connector! https://www.l-com.com/frequently-asked-questions/what-is-a-db9-connector#:~:text=The term "DB9" refers to,(for the female connector).
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@Robert-Perrett , I did not answer the question, my apologies... the serial interface for a DB-9 connector would be used in older connections, such peripheral devices like keyboards, mice, joysticks, as well as console connections.