Preprogrammed single-chip microcontroller

Twenty-five musical keys and 25 LEDs are provided to denote F to F` with half notes in between. Memory can store a played tune. There are ten preprogrammed tunes (each has an average of 55 note s) masked in the chip. Any tune can be recalled by depressing the Tune Button followed by the corresponding Sharp Key
In learn mode, the player can learn the ten preprogrammed tunes.
 EPF6016QC208-3 AD817AR DG211CJ EPM7192SQC160-10 FDS6612A AD9850BRS AD8016ARB TMS320F2812PGFA PCF8584T SN75176BP PCM1801U PCI9080-3 MAX211ECAI MAX708CSA