Simple Melody Integrated Circuits - HK223

 Single tone melody IC with 128
   musical notes, several  standard 
   songs available in list for song
   option .
 Built in 1 LED flash output for  
   sound output indication . 
 3 trigger mode option for one
   shot non re-trigger ( TG1 pin ) ,
   level hold trigger ( TG2 pin ) and 
   power on / off types (  TG1 and
   TG2 are connected to VDD ) .
 Speaker or buzzer for sound
   output device .