Natural Harmonic Integrated Circuits - HK327

 Natural harmonic melody IC with
   2048 musical notes , maximum 
   to 25 songs programming .
 HK327-1, HK327-3 included 12
   X'mas songs each . 
 4 different envelop wave form &
   6different frequency wave form .
 Option 4  trigger mode from 2
   function pins ( SL pin & MODE 
   pin ) setting :
    (1) Level hold type  
    (2) One shot non re-trigger   
    (3) One shot re-trigger
    (4) One touched trigger key, 
         plays all song with sequence
         output
 Built in 4 LED flash output with
   the several different display for
   sound output indication
 Built in a motor driver circuit for
   motor driving output