diff --git a/3/3.uvopt b/3/3.uvopt
new file mode 100644
index 0000000..a99d45e
--- /dev/null
+++ b/3/3.uvopt
@@ -0,0 +1,197 @@
+
+
+
+ 1.0
+
+ ### uVision Project, (C) Keil Software
+
+
+ *.c
+ *.s*; *.src; *.a*
+ *.obj; *.o
+ *.lib
+ *.txt; *.h; *.inc
+ *.plm
+ *.cpp
+ 0
+
+
+
+ 0
+ 0
+
+
+
+ Target 1
+ 0x0
+ MCS-51
+
+ 35000000
+
+ 1
+ 1
+ 1
+ 0
+ 0
+
+
+ 0
+ 65535
+ 0
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+
+ 120
+ 65
+ 8
+ .\Listings\
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+
+
+ Source Group 1
+ 1
+ 0
+ 0
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+
+ 1
+ 1
+ 1
+ 0
+ 0
+ 0
+ .\main.c
+ main.c
+ 0
+ 0
+
+
+ 1
+ 2
+ 4
+ 0
+ 0
+ 0
+ .\STCBSP_V3.6.LIB
+ STCBSP_V3.6.LIB
+ 0
+ 0
+
+
+
+
diff --git a/3/3.uvproj b/3/3.uvproj
new file mode 100644
index 0000000..a0f3c2e
--- /dev/null
+++ b/3/3.uvproj
@@ -0,0 +1,395 @@
+
+
+
+ 1.1
+
+ ### uVision Project, (C) Keil Software
+
+
+
+ Target 1
+ 0x0
+ MCS-51
+ 0
+
+
+ STC15F2K60S2 Series
+ STC
+ IRAM(0-0xFF) XRAM(0-0x6FF) IROM(0-0xEFF8) CLOCK(35000000) MODP2
+
+ "LIB\STARTUP.A51" ("Standard 8051 Startup Code")
+
+ 62472
+ STC15F2K60S2.H
+
+
+
+
+
+
+
+
+
+
+ 0
+ 0
+
+
+
+ STC\
+ STC\
+
+ 0
+ 0
+ 0
+ 0
+ 1
+
+ .\Objects\
+ 3
+ 1
+ 0
+ 1
+ 1
+ 1
+ .\Listings\
+ 0
+ 0
+ 0
+
+ 0
+ 0
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+
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+ 0
+ 0
+ 0
+ 0
+ 0
+ 1
+ 0
+ 0
+ 0
+ 0
+ 3
+
+
+ 1
+ 65535
+
+
+ S8051.DLL
+
+ DP51.DLL
+ -pDP8051
+ S8051.DLL
+
+ TP51.DLL
+ -p51
+
+
+
+ 0
+ 0
+ 0
+ 0
+ 16
+
+
+ 1
+ 1
+ 1
+ 1
+ 1
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+
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+ 0
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+ 3
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+ 1
+ 1
+ 0
+ 0
+
+
+
+
+ ..\inc
+
+
+
+ 0
+ 1
+ 0
+ 0
+
+
+
+
+
+
+
+
+ 0
+ 0
+ 1
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ Source Group 1
+
+
+ main.c
+ 1
+ .\main.c
+
+
+ STCBSP_V3.6.LIB
+ 4
+ .\STCBSP_V3.6.LIB
+
+
+
+
+
+
+
+
diff --git a/3/main.c b/3/main.c
new file mode 100644
index 0000000..926f681
--- /dev/null
+++ b/3/main.c
@@ -0,0 +1,21 @@
+#include "Beep.h"
+#include "STC15F2K60S2.H"
+#include "music.h"
+#include "sys.H"
+
+code unsigned long SysClock = 11059200; //必须。定义系统工作时钟频率(Hz),用户必须修改成与实际工作频率(下载时选择的)一致
+
+code char level[] = {0x21, 0x08, 0x22, 0x08, 0x23, 0x08, 0x24, 0x08, 0x25, 0x08};
+
+void main()
+{
+ BeepInit();
+ MusicPlayerInit();
+ MySTC_Init();
+ SetMusic(100, 0xfc, level, sizeof(level), enumMscNull);
+ SetPlayerMode(enumModePlay);
+ while (1)
+ {
+ MySTC_OS();
+ }
+}
diff --git a/3/readme.md b/3/readme.md
new file mode 100644
index 0000000..425f00a
--- /dev/null
+++ b/3/readme.md
@@ -0,0 +1,3 @@
+# 音乐
+
+开机后A调,每分钟100拍,播放1、2、3、4、5 (给简谱)。