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Old November 29th 10, 07:34 PM posted to rec.radio.amateur.homebrew
Rob[_8_] Rob[_8_] is offline
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First recorded activity by RadioBanter: Dec 2008
Posts: 375
Default Multifunction IC

Andreu wrote:
Hello, first thanks for your comments and suggestions, and
sorry for my tri-post...sometimes thunderbird combined with my nerves
make for such nasty things.
Regarding the IC, please look at:

http://www.qsl.net/va3iul/Homebrew_R...eyer_W9HFM.gif

and you will see a CW keyer build around a single IC (MC787P in this case).
So yes, such a rare beasts exist ...lol. They consist of a J-K flip-flop
and 2 or 3 gates. The problem is that they are dated back from the 70's
and doesn't exist anymore, so I was looking for a more current one.


These days, people designing an entire circuit around a single IC use
a microcontroller. E.g. a PIC or something from AVR.