Multi-tunes Melody Integrated Circuits - HK227

Dual tone melody IC with 256
   musical notes , fixed 3 songs
   maximum .
 HK227-2 , HK227-3 , HK227
    -6 ,  HK227-7 each IC with
    3 children songs .
   HK227-1 & HK227-5 each IC
   with 3 X'mas songs . 
 3 alone trigger pins active to 3
   alone song .
 SQ pin available,  3 songs
   sequence output when SQ
   pin is sequence touched .
 Trigger mode by one shot
   re-trigger type .
 Built in 1 LED flash output for 
   sound out indication .