Introduction - If you have any usage issues, please Google them yourself
AT89C51SND1C hard disk-based MP3 MP3 called MPEG Ⅰ/Ⅱ audio layer 3. Portable MP3 player to a large number of erasable FLASH memory or hard disk memory for storage rings, the audio signal in order to document the form of storage medium, in the playback, MP3 MP3 players for file compression and decoding, and audio settings, and finally an excuse to have audio through the audio signal.