24 Oct
2004
24 Oct
'04
3:34 p.m.
Jules Richardson wrote:
Does anyone know when blue LEDs first became commercially available? The
pair of Apollos that arrived at the museum yesterday both have
rectangular blue LEDs fitted alongside the amber and green on the front
of the machine - the systems date from 1990 though...
I tried to put them into a system around 1989-90 and found they were
*very* expensive. The person in charge of purchasing came back with
something like hundreds of dollers per led...
-brad