DB-25, DE-9, and friends (was: looking for SCSI cable ..)

[Benjamin Scott]

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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