[Healeys] Austin Healey Barbie clock radio

[Bob Spidell]

Thanks.  I stand corrected.


bs


Johnsen, Bernard F (AS) wrote:
> <snip> 
> Frequency would only affect an electromechanical clock--one driven by an
> electric motor.  The Barbie clock is solid state--AC is converted to DC
> for use by integrated circuits (like the LED display).  A frequency
> change would have little to no effect. 
> <snip>
>
> Not necessarily true. It depends on the design of the clock. Older
> digital clocks did in fact count cycles from the power source, and use
> divide by 60 and divide by 10 circuits to derive their timing. Later
> designs used a crystal oscillator as a timing source, as you alluded to.
>
> - Bernie Johnsen 1967 BJ8, 1977 Digital Clock (although its not a Barbie
> one)
>
>   


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Bob Spidell           San Jose, CA            bspidell at comcast.net

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