Description: 1. The use of I/O I have a certain frequency square wave to drive the buzzer, the issue of different tones, which play music (at least 3 pieces, each not less than the first 30 seconds) 2. Using LCD display information 3. Boot-up has prompted English welcome characters, playing songs show the serial number (or name) 4. Through the function button to select the music, pause, play. 5. Selected as the content: Display the remaining time or music playback time
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