13 Sep
1999
13 Sep
'99
12:52 p.m.
Upon the date 07:12 PM 9/13/99 +0100, Tony Duell said something like:
-- snip --
Tony and others:
I can't recall for sure but has someone posted anywhere a cross ref list
between HP house numbers and industry equivalent numbers? I thought there
was some discussion here a long time ago about this but I'm subscribed to
several other lists which could have had the same type of discussion.
Thanks for any pointers folks!
Regards, Chris
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Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA cfandt(a)netsync.net
Member of Antique Wireless Association
URL: http://www.antiquewireless.org/
All but 3
parts have a numbering like 1820-0xxx, wher xxx is
Almost all HP logic chips are 1820-xxxx :-). And these ones are not in my
list of equivalents, which means they might well be custom (I would
suspect a lot of them are, since there's nowhere near enough parts to
make a calculator using MSI TTL here).