diff --git a/4/4.uvopt b/4/4.uvopt
new file mode 100644
index 0000000..a99d45e
--- /dev/null
+++ b/4/4.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
+
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+ Source Group 1
+ 1
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+ .\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/4/4.uvproj b/4/4.uvproj
new file mode 100644
index 0000000..7763960
--- /dev/null
+++ b/4/4.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
+
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+ 4
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+ 1
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+ 1
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+ 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
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+ ..\inc
+
+
+
+ 0
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+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+ Source Group 1
+
+
+ main.c
+ 1
+ .\main.c
+
+
+ STCBSP_V3.6.LIB
+ 4
+ .\STCBSP_V3.6.LIB
+
+
+
+
+
+
+
+
diff --git a/4/main.c b/4/main.c
new file mode 100644
index 0000000..1216db9
--- /dev/null
+++ b/4/main.c
@@ -0,0 +1,43 @@
+#include "DS1302.h"
+#include "STC15F2K60S2.H"
+#include "displayer.h"
+#include "sys.h"
+#include "universal_decode_table.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
+struct_DS1302_RTC time,temp;
+unsigned char display[8];
+
+void changeClock()
+{
+ temp = RTC_Read();
+ display[0] = temp.second & 0x0f;
+ display[1] = (temp.second >> 4) & 0x0f;
+ display[2] = temp.minute & 0x0f;
+ display[3] = (temp.minute >> 4) & 0x0f;
+ display[4] = temp.hour & 0x0f;
+ display[5] = (temp.hour >> 4) & 0x0f;
+ display[6] = temp.day & 0x0f;
+ display[7] = (temp.day >> 4) & 0x0f;
+ Seg7Print(display[7], display[6], display[5], display[4], display[3], display[2], display[1], display[0]);
+}
+
+void main()
+{
+ time.year = 0x22;
+ time.day = 0x22;
+ time.month = 0x8;
+ time.hour = 0x15;
+ time.minute = 0x33;
+ time.second = 0x22;
+ DS1302Init(time);
+ DisplayerInit();
+ SetDisplayerArea(0, 7);
+ LedPrint(0);
+ SetEventCallBack(enumEventSys10mS, changeClock);
+ MySTC_Init();
+ while (1)
+ {
+ MySTC_OS();
+ }
+}