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anvaridthe anvaridthe
wrote...
Posts: 740
Rep: 6 0
6 years ago
Without the benefit of 60 Hz line voltage input, 1 pulse per second clock frequency could be generated by:
 
  A) a crystal oscillator. B) a 555 timer and Schmitt-trigger.
  C) a Schmitt-trigger and MOD 60 counter. D) Either A or B
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wrote...
6 years ago
D
anvaridthe Author
wrote...
6 years ago
So smart
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