Many newer keyboards use standard USB connectors as their interface to the motherboard, but older systems had dedicated keyboard connectors. What kind of port was normally used to connect a keyboard to the motherboard?
A) Mini-DIN
B) 3.5mm TRS
C) DE-15
D) IEEE 1394
The answer: A) Mini-DIN
The Mini-DIN ports were used both for keyboards and for mice.
The incorrect answers:
B) 3.5mm TRS
3.5mm tip-ring-sleeve jacks are normally seen in audio connections.
C) DE-15
The DE-15 standard port is usually associated with the VGA video port.
D) IEEE 1394
IEEE 1394 is another name for Firewire.
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Want to know more? Watch “Motherboard I/O Connections.” All motherboards have input and output ports on the back, but what do all those connections mean? In this module, we’ll turn the PC around and show you exactly how each port works and how to instantly recognize the most common input and output connections.. |
Shouldn’t DE-15 be DB-15(D barrel or D shell)?
The industry has become used to using the “DB” name for any of these connections, but the second letter is actually the size of the connector:
http://en.wikipedia.org/wiki/D-subminiature