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Testing the HP-35's chips at Mostek - Printable Version

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Testing the HP-35's chips at Mostek - EdS2 - 07-28-2016 05:18 PM

I just read this great article by Fred Beckhusen, who worked in the top secret(*) testing facility at Mostek, where they were one of two manufacturers of chips for the HP-35 and successors:
http://www.mitsi.com/the-hp-35-bluebird-tester/

[Image: Figure%2B1.png]

They also tested the bulk of the world's supply of Z80s, apparently:
http://www.mitsi.com/a-bit-of-z80-history/

via
https://plus.google.com/u/0/+FredBeckhusen/posts/2FCVjmCmbvd
and points nearby.

(*) Not really. But there was a code name, and HP's name was used only on a need-to-know basis.

RE: Testing the HP-35's chips at Mostek - Katie Wasserman - 07-29-2016 01:28 AM

Thank you so much for this!

It's a really interesting article and totally on topic for our main forum so I moved it there for better exposure.

RE: Testing the HP-35's chips at Mostek - EdS2 - 07-29-2016 06:30 AM

Thanks Katie!

RE: Testing the HP-35's chips at Mostek - TomC - 07-29-2016 03:55 PM

Good stuff! Great that this history has been preserved! (Writing from the Henry Ford Museum in Michigan )

(07-28-2016 05:18 PM)EdS2 Wrote:  I just read this great article by Fred Beckhusen, who worked in the top secret(*) testing facility at Mostek, where they were one of two manufacturers of chips for the HP-35 and successors:
http://www.mitsi.com/the-hp-35-bluebird-tester/

[Image: Figure%2B1.png]

They also tested the bulk of the world's supply of Z80s, apparently:
http://www.mitsi.com/a-bit-of-z80-history/

via
https://plus.google.com/u/0/+FredBeckhusen/posts/2FCVjmCmbvd
and points nearby.

(*) Not really. But there was a code name, and HP's name was used only on a need-to-know basis.


RE: Testing the HP-35's chips at Mostek - d b - 07-30-2016 05:57 AM

GREAT FIND - GREAT ARTICLE EdS2

Mostek also made other RPN ROMs. example here

RE: Testing the HP-35's chips at Mostek - Dwight Sturrock - 07-30-2016 05:18 PM

Great article! Seems like this guy has been in the business forever.