To get up to a gigabit data rate, the pulses will be so fast you'd never see them. Even if it's multiplexed across many "frequencies" (colors), the pulsing will still be far faster than any eye could detect.
Plus, you're assuming it would be visible. Infrared would be somewhat easier and cheaper to generate.
(2) If these drives are intended for scrap, there's no need to worry about re-release. (When was the last time you re-used a 10 gig drive?)
I wonder if Compuserve was running on DEC hardware with TOPS-10
Originally, yes. I believe they moved to VAX in later years, but kept the user IDs.
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