HP 9000 520

From: Joe <rigdonj_at_intellistar.net>
Date: Mon Apr 9 15:08:49 2001

At 07:36 PM 4/8/01 +0100, Tony wrote:
>> >
>
>It's a databook (no matter how old or what company, I am sure to come
>across at least one of the devices one day. For example I picked up an
>RCA linear databook the other day. It's got the data sheet for the anode
>driver chip used in the HP67 in it...)

    Cool find! I found an old RCA data book that had what looked like the
anode driver in it but I hadn't had a chance to verify that is was indeed
the part that HP used. If it is, then that means there is some hope of
finding replacement parts.


>
>It relates to a machine, or series of machines, that I am seriously
>interested in. I'll buy all such books, no matter how elementary the
>information they contain.

    Ditto. I usually pick them up even if it's not a machine that I'm
immediately interested in. I pass them on to other collectors or just save
them.

>
>It's part of a series of books that I am trying to obtain. Like the
>(classic) MIT Radiation Lab series [1]

>[1] For those who've not seen these, they are 28 (I think) volumes
>describing electronics, particularly for radar and radio navigation, as
>it was done in the 1940s and 1950s. Lots of _great stuff_....

   These are a VERY interesting series. Basicly they cover subjects that
they discovered/developed during WW II while developing RADAR, the atomic
bomb and other fancy toys. I've only been able to find one of them so far.
I think it's on Pulse Generating circuits.


>Incidentally, unless I misuderstood the copyright notice in these books,
>it appears they are now public domain (it claims they will become public
>domain 10 years after the date of publication, which was about 50 years
>ago). I am suprised nobody has reprinted them, or scanned/OCRed them or
>something.

    Joe
Received on Mon Apr 09 2001 - 15:08:49 BST