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Title: 20090611210422960 Download
  • Category:
  • SCM
  • Tags:
  • [PDF]
  • File Size:
  • 118kb
  • Update:
  • 2012-11-26
  • Downloads:
  • 0 Times
  • Uploaded by:
  • lijianjiangsu
 Description: US-tone buzzer in the air conditioning system mainly through the control of different music to express different states, or different operations to respond to different music. And different music is by controlling the chip, two pins to control the buzzer. One is to control the buzzer work. The music of the tail is controlled by closing buzzer, which comes with the capacitor discharge caused. The other is to control the buzzer' s situation. Specifically to the prescaler from the crystal frequency counters and then to a series of control, and people want to do to achieve the scale, the realization of music.
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