13 Feb
2015
13 Feb
'15
5:26 p.m.
Exactly why I argued for the retention of replaced parts at LCM. <sigh>
On Thu, Feb 12, 2015 at 3:30 PM, Brent Hilpert <hilpert at cs.ubc.ca> wrote:
On 2015-Feb-12, at 12:49 PM, Chuck Guzis wrote:
--
Ian S. King, MSIS, MSCS
Ph.D. Candidate
The Information School
University of Washington
An optimist sees a glass half full. A pessimist sees it half empty. An
engineer sees it twice as large as it needs to be.
On 02/12/2015 11:51 AM, Kyle Owen wrote:
> Darn! That sounded like a good collection. Alas, I know I haven't kept
> every bad IC either (except that one from the PDP-8/E...not really sure
why
> until now, I guess). But if you do find them,
I could certainly use
them.
Just curious--has anyone ever done a life-cycle study on
plastic-packaged vs.
CerDIP packaged SSI TTL?
Well, just a data point, but I've never had to replace an IC in my ca-1970
HP2116, composed of hundreds of SSI chips, 80-90%of which are CerDIP.
They're mostly CT?L, with some TTL, however.
(It's had one quad-pack core driver transistor failure.)
For that age and number of ICs, that's pretty good. Contrast even with
other HP equipment.