20 May
2009
20 May
'09
3:40 p.m.
If anyone would have a mid-1970s or perhaps early
1980s National
Semiconductor databook that covers LED displays, that might have some
info. ?I do not (I only have NS memory/logic books).
Cripes - of the eight shelf-feet of pre-1980 National databooks here,
none cover the opto line. I do know, however, that the modules (and
there were many, many variants) have numbers that start with NSN, like
NSN70 or NSN200. Back in the mid 1980s, they dumped scads of the
things on the surplus market (think "Poly Packs").
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.
--
Will