For once Wikipedia is right. Those diagrams are straight out of the
original Canon datasheets!
Nigel
On 2023-08-11 15:47, Milo Velimirović via cctalk wrote:
The answer to the question about the DB-25 connector (and others) can be found
here, if one trusts Wikipedia.
https://en.wikipedia.org/wiki/D-subminiature
No, DEC did not invent it, Cannon did.
—Milo
On Aug 11, 2023, at 2:06 PM, Steve Lewis via cctalk<cctalk@classiccmp.org>
wrote:
While probably unrelated, the mentioning of 3 rows of pins did remind me
about what I recently learned about the 1973 IBM SCAMP...
On the back side of it, it has a 3-row of 14-13-14 female pins (next to
what became a DB25 connector - did DEC come up with DB25??).
Was curious if anything ideas on what that 3-row might be for. The photo
should be here:
https://voidstar.blog/scamp-a-review-50-years-later/#jp-carousel-6400
-Steve
On Sun, Aug 6, 2023 at 4:35 PM Chuck Guzis via cctalk<cctalk@classiccmp.org>
wrote:
On 8/6/23 14:08, Paul Koning via cctalk wrote:
On Aug 4, 2023, at 10:10 PM, Jonathan Chapman via cctalk <
cctalk@classiccmp.org> wrote:
Anyone seen those before, and is it actually SCSI, or is it something
else?
Common on old Sun SCSI stuff, it's a DD-50. Could be something else,
but they were indeed used for SCSI termination.
Thanks,
Jonathan
The D-sub shells come in standard and high density flavors. For all
except the biggest one (DD), standard is two rows and HD is three. But DD
has three rows in the standard density and 4 rows in high density.
DC62 was used in several tape drive controllers.
--Chuck
--
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
