TechWhirl (TECHWR-L) is a resource for technical writing and technical communications professionals of all experience levels and in all industries to share their experiences and acquire information.
For two decades, technical communicators have turned to TechWhirl to ask and answer questions about the always-changing world of technical communications, such as tools, skills, career paths, methodologies, and emerging industries. The TechWhirl Archives and magazine, created for, by and about technical writers, offer a wealth of knowledge to everyone with an interest in any aspect of technical communications.
Subject:DB 9 or 25: The Definitive Answer From:STaylor <sntaylor -at- STARTEXT -dot- NET> Date:Mon, 15 Dec 1997 22:42:12 -0600
I'll put it all together:
D subminiature connector, B size shell, 9 pin insert.
from: William E Newkirk
"D" for the shape of the connector (look at the business end of the pin
connector when held with the longest side to the left). The connector style
is also often referred to as D-Sub or D-Subminiature.
"B" doesn't make any sense to me in this context, as the second letter I
thought meant the number of pins:
A - 15
B - 25
C - 37
D - 50
E - 9
So "B" would only occur in a 25-pin connector, as in "DB-25P." A 9-pin
connector from this family would be "DE-9P." Is it possible that the
reference you're pulling this out of has corrupted the usage? Since DB-25's
are the connectors for the RS-232 serial communication standard, perhaps
they kept the "B" when referring to the 9-pin adaptation of RS-232?
Walker, Arlen P
So that pretty much takes care of it...thanks to all of you who delved into
the depths of trivia...
Steve Taylor
staylor -at- breakawynet -dot- com
sntaylor -at- arlington -dot- net
