• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:

The microprocessor at 40--The birth of electronics ...

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Jul 20, 2005
Thought some of you guys might like these columns.

The microprocessor at 40--The birth of electronics
Jack Ganssle
"Amazingly, radio existed in those pre-electronic days. The Titanic's radio operators sent their dit-dit-dit dah-dah-dah dit-dit-dit with a spark gap transmitter, a very simple design that used arcing contacts to stimulate a resonant circuit. The analogy to a modern AM transmitter isn't too strained: today, we'd use a transistor switching rapidly to excite an LC network. The Titanic's LC components resonated as the spark rapidly formed, creating a low-impedance conductive path, and extinguished. The resulting emission is not much different from the EMI caused by lightning. The result was a very ugly wide-bandwidth signal, and the legacy of calling shipboard radio operators "sparks." "
The microprocessor at 40--The birth of electronics

Part 2.
From light bulbs to computers

Part 3.
The semiconductor revolution
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