14 Sep
1999
14 Sep
'99
11:07 a.m.
At 07:03 PM 9/14/99 +0100, you wrote:
I'm glad Tony mentioned this. Walter at Sphere has been collecting HP
parts lists that have part number cross references and posting all numbers
on his website. I've been sending him copies of the part lists with cross
references that I have so he can add them to the list. If anyone out these
has any HP part lists or other cross references you should send them to him
to be added. This cross reference is very usefull and I hope everyone will
help out with it.
"http://www.sphere.bc.ca/test/"
Joe
Those 1820-xxxx numbers remind me of lots of HP boards I've looked at over
the years.
Yes, HP assigned an 1820-number to just about every (logic) chip that
they used. They had similar numbering schemes for resistor networks,
transistors, etc.
This seems to have been done to simplify the parts inventory at HP rather
than to make it difficult to replace chips. There is no great secrecy on
the 1820-numbers -- service manuals give the standard equivalents in the
parts list,