At 8:20 AM -0700 9/7/05, <[EMAIL PROTECTED]> wrote:
Thanks for the clarification -- Clark: what does DB and DE mean? That would
certainly help my understanding. Anyway -- AGAIN more confusion ... you are
correct, the metal connector surrounding the pins is rounded on every such
connector I've ever seen. I was referencing the actual plastic molding which
is the only way to differentiate similar types of cables (except color). The
128k & 512k had a blocky square edged finish whereas the Plus used a rounded
edge finish, presumably to make it lower profile and more stylish. The icons
also changed on them as well as the texturing was removed on the tightening
bolts (this last one made NO sense). These changes were made by Frogdesign
as part of the Apple-Talk connector design program in 1985, which became the
Apple-family connectors unifying STYLE and applied to every kind of
connector Apple needed.
The letter after the "D" specifies the connector shell (not the
plastic "handle"). The numbers after it specify the number of pins.
The standard connectors are:
DA-15 Old Apple video, PC Game controllers, AUI networking
DB-25 RS-232C serial, Mac (and others) SCSI, PC Parallel
DC-37
DD-50 Sun SCSI (IIRC)
DE-9 Old Mac Serial, Old Mac Mouse, Serial
Technically VGA is a DE-15. Sun uses one I think called WG-13 or
something like that with coax pins for monitors. Apple also used it
for their two page display. It would be called a DB-13. In the
electronics industry there are a number of other connector
configurations with larger pins for power and coax.
The use of the terms DB-9 and DB-15 are simply computer people who
don't understand and are mis-using the terms
From: Clark Martin <[EMAIL PROTECTED]>
The DE-9 connector (no it's not a DB-9) used for Mac128 & 512K Serial
and all early mouse ports all have the same rounded connectors. It
is a standard connector originally made by AMP IIRC. The plastic
shell was rounded on some connectors. The connector is the same
> though.
--
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
"I'm a designated driver on the Information Super Highway"
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