Buzzer test using MCU control related buzzer. Thus master MCU uses minimal system and related IO port.

3 蜂鸣器\Thumbs.db
........\蜂鸣器电路图.jpg
........\......试验\祝你平安\znpa
........\..........\........\znpa.asm
........\..........\........\znpa.hex
........\..........\........\znpa.lnp
........\..........\........\znpa.LST
........\..........\........\znpa.M51
........\..........\........\znpa.OBJ
........\..........\........\znpa.Opt
........\..........\........\znpa.plg
........\..........\........\znpa.Uv2
........\..........\........\znpa_Opt.Bak
........\..........\........\_desktop.ini
........\..........\生日快乐\Buzz.asm
........\..........\........\buzz.hex
........\..........\........\buzz.lnp
........\..........\........\buzz.M51
........\..........\........\buzz.Opt
........\..........\........\buzz.plg
........\..........\........\buzz.Uv2
........\..........\........\buzz_Opt.Bak
........\..........\........\buzz_Uv2.Bak
........\..........\........\HAPPY.ASM
........\..........\........\HAPPY.LST
........\..........\........\STARTUP.A51
........\..........\........\_desktop.ini
........\..........\无源蜂鸣器响\beep
........\..........\............\beep.c
........\..........\............\beep.hex
........\..........\............\beep.lnp
........\..........\............\beep.LST
........\..........\............\beep.M51
........\..........\............\beep.OBJ
........\..........\............\beep.plg
........\..........\............\beep.uvopt
........\..........\............\beep.uvproj
........\..........\............\beep_uvopt.bak
........\..........\............\beep_uvproj.bak
........\..........\............\STARTUP.A51
........\..........\............\STARTUP.LST
........\..........\............\STARTUP.OBJ
........\..........\救护车\jhc
........\..........\......\jhc.asm
........\..........\......\jhc.hex
........\..........\......\jhc.lnp
........\..........\......\jhc.LST
........\..........\......\jhc.M51
........\..........\......\jhc.OBJ
........\..........\......\jhc.Opt
........\..........\......\jhc.plg
........\..........\......\jhc.Uv2
........\..........\......\jhc_Opt.Bak
........\..........\......\p33dida.LST
........\..........\......\p33dida.OBJ
........\..........\......\_desktop.ini
........\..........\八月桂花\beep
........\..........\........\beep.c
........\..........\........\beep.hex
........\..........\........\beep.lnp
........\..........\........\beep.LST
........\..........\........\beep.M51
........\..........\........\beep.OBJ
........\..........\........\beep.Opt
........\..........\........\beep.plg
........\..........\........\beep.Uv2
........\..........\........\beep_Opt.Bak
........\..........\........\beep_Uv2.Bak
........\..........\........\STARTUP.A51
........\..........\........\STARTUP.LST
........\..........\........\STARTUP.OBJ
........\datasheet-相关芯片手册\74HC14.pdf
........\......................\ULN2003A.pdf
........\蜂鸣器试验\祝你平安
........\..........\生日快乐
........\..........\无源蜂鸣器响
........\..........\救护车
........\..........\八月桂花
........\蜂鸣器试验
........\datasheet-相关芯片手册
3 蜂鸣器

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