A melody generator IC is
used to synthesize 5~ 12 popular melodies.
The IC can be programmed to operate in various modes .
For this kit, two button switches are provided.
The "repeat" button starts the same melody that was last played whereas
"select" button causes the circuit to start a different tune every time.
Comes with Volume control
(battery holder and a small loud speaker included) Click here for
UM348x datasheet (pdf)