DB-25, DE-9, and friends (was: looking for SCSI cable ..)
Benjamin Scott
bscott at ntisys.com
Wed Dec 29 20:04:00 EST 2004
On Wed, 29 Dec 2004, at 3:46pm, neil at neilschelly.com wrote:
> Thanks for clarifying... and I always assumed that DB was somehow an
> abbreviation for D-Sub, but I have no idea if that even makes sense.
This is what I've read:
"DB" was originally a specific connector shell, the one commonly used for
25-pin RS-232 connectors. The "D" refers to the shape, of course, and the
"B" is just a size designation. So "DB-25" is a D shaped, B size, 25-pin
connector.
The term "DB" has gradually been corrupted to mean just about whatever the
speaker wants it to mean. For example, the 9-pin connector commonly used
for RS-232 is properly a "DE-9" connector. VGA is properly "DE-15".
A Google search found this:
http://epl.meei.harvard.edu/Engineering/d-subminiature.html
--
Ben Scott <bscott at ntisys.com>
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