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

[Brent Hilpert]

Ethan Dicks wrote:
> Not me... this is a $3 thrift store find from a few years back.  Now
> it's hard to find LED calcs in that venue - just too old for folks to
> run across and discard.  Plenty of cheap chinese LCD world
> clock/alarm/calculators now though (and I already have one that's
> CompuServe branded and another that's Sanrio branded, so I don't need
> more of them).

I fear that what happens with a lot of the old pocket calcs is they may get
delivered in boxes of stuff to thrift stores but because they likely don't
function, even if somebody bothers to put batteries in, they simply get
tossed. A lot of thrift stores won't bother putting out non-functioning stuff.

Unfortunately, I've had problems in a couple of Novus calcs using the Nat Semi
LED modules with loss of individual segments, although admittedly the same can
be said for some earlier TI calcs.