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PICList Thread
'[OT] SquareWave'
1998\04\24@123542 by Mike Keitz

picon face
On Fri, 24 Apr 1998 11:11:34 -0500 Frank Mckenney <spam_OUTrrs0059TakeThisOuTspamibm.net>
writes:

>The "down side" is the it will only cover the last part of your
>desired
>range, since it is limited to [391KHz - 100MHz].

If you can generate the last range, the other ranges can be obtained
easily by dividing the frequency by 10, 100, or 1000.  The step size will
also reduce proportionally.  Decade counter IC's such as the 74HC393 are
suitable for dividing a frequency by 10.  I think there was once a
4000-series chip that had 3 decade counters in one package, but I don't
remember the number.


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