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| Keywords: Split-flap display.jpg en Mechanism of a split-flap alarm clock removed from its case It displays the time digitally on flaps mounted on wheels The inset shows the metal tab holding back the top flap Each complete turn of a wheel advances the wheel on its left by one flap The wheels are turned by an electric motor visible in the back synchronized to the oscillations of the AC current from the wall plug Therefore unlike later quartz digital clocks this is a synchronous clock which is kept to the correct time by the 50/60 Hz AC power grid The narrow numbered wheel and knobs on the left are the alarm mechanism de Typische Fallblattanzeige in einem Uhrenradio own Foto und Fotomontage selbst erstellt Reinraum 2010-09-19 Deutsches Museum München 2010 ImageNote 1 283 173 519 626 2945 2028 2 Synchronmotor für den Antrieb ImageNoteEnd 1 Electric clockworks Split-flap displays Split-flap clocks Time 11 00 | ||||
