The Accutron watch didn't have a terribly long life, as things go in horology, but it had a pretty interesting one. The first year of production, 1960, was preceded by a nearly decades-long period of research and development, and when the Accutron debuted, it was the first really commercially and technically successful electronic watch. At the heart of the Accutron is a tuning-fork oscillator, made to vibrate thanks to current provided by a small battery. One tine of the tuning fork has a tiny pawl attached to it, and as the tuning fork vibrates, the pawl pushes the teeth of an index wheel (both the pawl and the 320 teeth of the index wheel are so small that they're almost impossible to see without the aid of a microscope). The movement of the index wheel drives the hands, and of course, the whole system is regulated by the frequency of the vibration of the tuning fork.
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