Play music exercises buzzer/speaker. Code 89c51 microcontroller Getting Started in the offer can not be emulated, I and the Internet to find a orchids music player, it can be successfully simulated. Buzzer/Speaker sound principle: by changing the delay between off to change the tone emitted by repeating this on and off to control the delay to the length of sound.

musicPlayer
...........\Last Loaded playMusicBoard.DBK
...........\MusicPlayer
...........\MusicPlayer.hex
...........\MusicPlayer.lnp
...........\MusicPlayer.M51
...........\MusicPlayer.plg
...........\MusicPlayer.uvopt
...........\MusicPlayer.uvproj
...........\MusicPlayer_uvopt.bak
...........\MusicPlayer_uvproj.bak
...........\music_player.c
...........\music_player.ls1
...........\music_player.LST
...........\music_player.OBJ
...........\music_player.SRC
...........\music_player.__i
...........\music_player_view.c
...........\playMusicBoard.DSN
...........\playMusicBoard.PWI
...........\STARTUP.A51
...........\STARTUP.LST
...........\STARTUP.OBJ

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