11 Oct
2002
11 Oct
'02
1:20 p.m.
And I don't think it's a short hop from having
an LED light source to
having an LED calculator. Calculators existed with different displays
before LEDs.
I used calculators with mechanical display, Nixie tubes, and CRTs
Watches and clocks? They were digital before LEDs,
too.
I've had mechanical digital clocks,
but I can't recall any digital watches before LEDs.