29 Aug
2002
29 Aug
'02
1:29 p.m.
At 09:02 AM 8/29/02 -0500, you wrote:
I now associate it more with instrumentation only
because I work for a large
research university ;) I used to associate it just with HP computers because
it was originally HPIB, designed to work with HP machines and their own
test/scientific equipment; they later opened the spec and it became GPIB,
as I
recall...
I don't think it was long after HPIB was introduced that the first
corresponding IEEE standard was issued. I think Tek adopted it
pretty soon. Things were very awkward before HPIB, with GPIO
interfaces, BCD interfaces, instrument-to-parallel printer interfaces
hacked into GPIO interfaces at the controller side... ugly, ugly.
Let's see: It was announced in the October '72 issue of the
HP journal, and immediately submitted to IEC. It was approved by IEC
as a standard at the end of '75, I believe, after some revisions
and signal name changes; I think IEEE 488 is from 1978,
and 488.1 was issued in 1987. But by the end of the 70's
it was definitely a multi-vendor standard for instrumentation.
carlos.
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Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org