Homebrew PCBs

On Fri, 15 Jun 2012 19:08:06 -0500, you wrote:

>tda7000 wrote:
>
> > Are you thinking of SCSI? Sometimes that uses a DB-25 connector.

The Roland 880 uses a 25 pin connector which is serial.  The IBM PC
parallel connector is the same connector style, but with pins rather
than sockets (IIRC).  

The HPIB bus uses a 24 pin version of the old centronics 36 pin
(amphenol blue ribbon style) connector.  It has wiping contacts rather
than pins and sockets.

The HPIB bus (later IEEE-488) is an 8 bit parallel bus with
handshaking used to control instruments and peripherals, typically
high end instrumentation.  Needless to say, HP used it a lot.
Tektronix and Fluke use it.  

The SCSI connector *may* be a standard DBM25 connector in some
versions (SCSI-1?), but is more typically a narrow "mini ribbon"
version of the Centronics connector.  There's a 50 pin dual readout
(like DBM25) version of SCSI as well.  All this is an IIRC, since I
don't use SCSI all that much.

Harvey

>
>No, that would be:
>HP-IB   HP Interface Buss
>Or
>IEEE-488
>
>Duane