Oct. 9, 1962: First Visible LED Is Demonstrated | This Day In Tech | Wired.com
richardoneill at earthlink.net
Tue Oct 9 15:01:14 CDT 2012
Discovery and control of fire to .... Burger King drive thru's:
Geologically speaking, a very short time. Plus, we got there ahead of
other species on this planet. :-)
On 10/9/2012 3:42 PM, Robert E. Seastrom wrote:
> "Karl W4KRL" <W4KRL at arrl.net> writes:
>> It is unusual to consider that it took half a century to go from the red LED
>> to a practical replacement of the incandescent bulb. Think of how much
>> faster other inventions developed like the airplane or personal computer.
> First manned flight [*]: 1783
> DC-3: 1936
> Elapsed time: 153 years
> Hollerith Tabulator [**]: 1889
> TRS-80 Model III: 1980
> Elapsed time: 91 years
> [*] Hot air balloon - Daedalus and Icarus missed the mark.
> [**] Babbage difference engine doesn't count; it was a paper design...
> LED technology development looks pretty good in that context.
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