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

[Fred Cisin]

On Thu, 21 May 2009, Chuck Guzis wrote:
> Around 1972, a co-worker obtained a divorce from his well-to-do wife
> who hadn't the foresight to execute a prenuptual agreement with him.
> He engaged in a lot of interesting buying afterwards--one item was a
> Pulsar digital.  I recall it was freakishly expensive--over USD$1000.
> Even then, it seemed inevitable that LED watches would eventually be
> cheaper than the mechanical variety.  Having to push a button to read
> the time was ridiculous.

Orbiting this at a distance of roughly ninety-two million miles is an
utterly insignificant little blue green planet whose ape-descended life
forms are so amazingly primitive that they still think digital watches are
a pretty neat idea.
. . .
. . .
"Haaaauuurrgghhh ..." said Arthur as he felt his body softening and
bending in unusual directions. "Southend seems to be melting away ... the
stars are swirling ... a dustbowl ... my legs are drifting off into the
sunset ... my left arm's come off too." A frightening thought struck him:
"Hell," he said, "how am I going to operate my digital watch now?" He
wound his eyes desperately around in Ford's direction.