Does anyone have any info about 1970s-era National SemiconductorLED modules?

[Gordon JC Pearce]

On Thu, 2009-05-21 at 05:03 -0300, Alexandre Souza wrote:
> >> National Semiconductor actually made calculators back in the 1970s - I
> >> used to have one maybe 20 years ago, but it is long gone. They also
> >> made a line of plug compatible S/370 mainframes, as well.
> > As well as watches and video games.  I still have an NSC watch
> > (nonfunctioning) and I recall giving a Pong game to my brother's
> > family as a gift back then.
> 
>     Chuck, you made me remember my first digital clock
> 
>     I was very young, about 4 or 5 years old (I'll be 35 in 3 days) and it
> was a white plastic watch with a red face and very tiny red numbers that
> lighted only with a press of a buttom. I remember clearly it was made by
> texas instruments. I'd love to have one of these again, but I think with
> this new wave of "everything vintage", it must be very expensive (and rare!)
> these days... :o(
> 
> Stop the press!!! Here it is:
> http://www.ledwatches.net/photo-pages/texas-instruments3.htm
> I had the white one :o) 
> 

A friend of mine had the black one.  I remember him showing my Dad and I
it, as we sat and fiddled with CB radios out in the back field.  Wow,
technology has moved on... (just comparing a £100-in-late-70s-money
4-watt CB radio the size of two bricks that guzzled AA nicads with my
£15 5-watt 70cm handheld the size of an espresso cup)

Gordon