bit slice chips (was Re: Harris H800 Computer)

dwight dkelvey at
Mon Apr 25 17:51:12 CDT 2016

Ah PolyPaks!
The parts were always guaranteed. If they were bad,
you could send them back and then you could test the next
They surely created the term "You-Test-Em".

From: cctalk <cctalk-bounces at> on behalf of Jon Elson <elson at>
Sent: Sunday, April 24, 2016 3:51 PM
To: General at; Discussion@
Subject: Re: bit slice chips (was Re: Harris H800 Computer)

On 04/24/2016 03:33 PM, ben wrote:
> On 4/23/2016 8:32 PM, dwight wrote:
>> I recall going to Mike Quinn's and seeing barrels of RTL.
>> I wish now that I'd bought a bunch of them.
>> Most DTL can be replace by a TTL except a few with different
>> pinouts and the NAND with the diode expand pin.
>> My oldest equipment has a mix of DTL and TTL.
>> Dwight
> All I ever saw was the ads like this.
Wrong coast!  Poly Paks was an East Coast outfit.
Mike Quinn's was at the Oakland, CA airport.  I first saw it
in the early 1990's, I think, when it was still in the WW-II
temp building on the airport property.  You were literally
walking on 3" of crunched circuit boards in the back rooms!
There were large tables covered with circuit boards and
small units, and the stuff that slid off the tables just
became the floor covering.

They had tons of boards out of computers and electronic
equipment. The best stuff was kept in front in glass cases
next to the cash register.


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