Description: To design a single chip as the core keyboard, automatically play music and play with music features. Set the switch/button K1, K2 and K3. Switch/button to open or close automatically K1 music player 1 switch/button to turn on or off K2 Auto Play Music 2 switch/button to play music K3 for the manual. 21 keys with a separate control switch to produce bass " 1,2 .. 7" , Alto, " 1,2, .. 7" and the treble, " 1,2, .. 7."
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简易电子琴.doc
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