I blogged two days ago that I designed the first digital metal detectors. This means metal detectors which use a stream of logic pulses. I
tweeted today that it could have been done 50 years earlier. But that is true only if one is speaking of logic chips or digital astables. In fact all the knowledge was there in (I think) 1925. In general, we are awfully sluggish in thinking new things.
OBSERVATION: I estimate that there have been about a million video-views of digital designs spawned by me.
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