> From:         Colin Constant[SMTP:colinpiclist@HOTMAIL.COM]
> Sent:         Wednesday, November 12, 2003 4:19 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      [EE]: D-Sub pinout -- where did that come from?

> I was putting a 9 pin D-Sub connector on a board, and I got to wondering,
> how did they come up with that pin spacing?  I mean .109 by .112 is pretty
> weird even if you convert it to metric.  Anyone know how that came about?

      I believe that the D type connectors were invented by the phone company.
      They may have some reason of their own for that.

      John Power

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