• وبلاگ : پايگاه اطلاع رساني باشگاه کشاورزان جوان روستاي سنو
  • يادداشت : گزارش مالي حسينيه
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    Drawing its power from a unique tuning fork system, the Bulova Accutron was the world"s first electronic replica watch . Inside the casing, a 360 hertz tuning fork sat between two electromagnet coils, which formed a single-transistor oscillator circuit. This drove the fork, which in turn powered the watch"s hands and allowed the device to keep time.