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October 2013

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Subject:
From:
Inge Hernefjord <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Inge Hernefjord <[log in to unmask]>
Date:
Sun, 6 Oct 2013 23:10:03 +0200
Content-Type:
text/plain
Parts/Attachments:
text/plain (169 lines)
I made my first circuit by hand. Used scalpel and X-film, half sq meter and
crimped it in the photolab to 1x2 inches. It was a trigger circuit for
laser guided missiles. We produced over 50,000 of them. That was before we
bought the X-Acto table. We used both hands and heads. Now quarter of head
and index finger....



On 5 October 2013 23:39, Robert Kondner <[log in to unmask]> wrote:

> "Computers were simple then"
>
>  Did computers really get more complex or just more transistors? :-)
>
>  I kind of like the comparison of chemical cameras (film or glass plate
> with
> silver compounds) to digital cameras when compare complexity. I mean the
> effect of electronics on photography has indeed been a revolution. But
> actually, if you think of tiny grains for silver in emulsion as
> electrochemical pixels you do see that old film was not that "Super
> Simple",
> it was just easier to manufacture with simple tools.
>
> I also marvel at that Apollo computer, and the fact the tools back then for
> designing PCBs were rubylith and X-Acto knives. Like the pyramids there are
> simply ideas that take tremendous engineering efforts to make happen.
>
> Bob K.
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge Hernefjord
> Sent: Saturday, October 05, 2013 5:13 PM
> To: [log in to unmask]
> Subject: Re: [TN] NTC for today
>
> I'm afraid it's not a space plane but just a plan.
> Actually, there is something I always wonder about. Go back to Neil
> Amstrong
> and that time...Apollo, for instance. The computers at that time were
> simple, compared to today's machines. I know, because I passed a glass box
> every day before I entered the clean rooms. In that box was Apollo's main
> computer, which we built. Lot's of transistors, most TO-18 and TO-5.
> Specked with 2N1893, 2121, 2902, which were very popular. Back to the
> path.....as I said, very simple stuff. The main functions were 'small
> push/pull rockets and main rockets, as long as the service module and the
> astronaut capsule were together. And communication radios. And sensors of
> various nature...but in alles rather uncomplicated electronics. My
> question: The central station in Houston was a large room with lots and
> lots
> of work stations. A hundred persons "worked" there, all with their noses
> close to the many large computer displays.Why was it necessary with  such
> many work stations?
>
> Inge
>
>
> On 5 October 2013 20:13, Steven Creswick <[log in to unmask]>
> wrote:
>
> > Hey,
> >
> >
> >
> > I read somewhere that Sweden is making a spaceplane.  How about a ride
> > on that, and play the Blue Danube?!!!
> >
> >
> >
> > Have a good time cruising!
> >
> >
> >
> > steve
> >
> >
> >
> > From: Inge Hernefjord [mailto:[log in to unmask]]
> > Sent: Saturday, October 05, 2013 1:17 PM
> > To: TechNet E-Mail Forum; Steven Creswick
> > Subject: Re: [TN] NTC for today
> >
> >
> >
> > Thank you,  buddy,
> > take care ya'self.
> >
> > Inge
> >
> >
> >
> > On 5 October 2013 02:43, Steven Creswick <[log in to unmask]>
> > wrote:
> >
> > It's probably already tomorrow there, but happy belated birthday Inge!
> >
> > Steve
> >
> >
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Ed Popielarski
> > Sent: Friday, October 04, 2013 3:32 PM
> > To: [log in to unmask]
> > Subject: [TN] NTC for today
> >
> > It's Ingemar Hernefjord's  birthday today!
> >
> > Happy Birthday, Inge!
> >
> > Ed Popielarski
> > Engineering Manager
> >
> > [Description: FullLogo]
> >                                970 NE 21st Ct.
> >                               Oak Harbor, Wa. 98277
> >
> >                               Ph: 360-675-1322
> >                               Fx: 206-624-0965
> >                               Cl: 949-581-6601
> >
> > https://maps.google.com/maps/myplaces?hl=en
> > <
> >
> https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0
> .
> > 011188,0.033023&ctz=420&t=m&z=16&iwloc=A>
> > &ll=48.315753,-122.643578&spn=0.0
> > 11188,0.033023&ctz=420&t=m&z=16&iwloc=A
> >
> >
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