Completed when the procedures established to achieve the password lock and music player features, audio signal amplification through the LM386 to drive speakers, P1 I achieve matrix keyboard input password

密码修改音乐
............\code.c
............\code.LST
............\code.OBJ
............\head.h
............\project
............\project.hex
............\project.lnp
............\project.M51
............\project.Opt
............\project.plg
............\project.Uv2
............\project_Opt.Bak
............\project_Uv2.Bak
............\STARTUP.A51
............\STARTUP.LST
............\STARTUP.OBJ
............\subprogram.h
............\音乐程序的设计.doc

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