I think that chip has many sounds on one right?SN76477N
Sadly, the SN76488N has been discontinued for quite a while. Radio Shack probably stopped carrying it about 20 years ago.Forrest M Mims III in Engineers Notebook II offers " Improved steam engine and whistle " using SN76488N & a 741 IC.
by Jake Hertz
by Aaron Carman
by Aaron Carman
by Jake Hertz