keil使用和数码管

1、1、查找USB接口。2、记下通信COM口，如果不换USB口，COM口不会发生变化。3、使用Keil软件。1、新建一个工程文件2、保存一个工程名称到指定的文件夹下。3、4、5、空的项目文件6、7、8、加源程序到工程9、10、11、编译操作12、生成一个目标代码*.hex文件13、数码管显示#include"reg51.h"Delay2ms(unsigned int DTime) unsigned int Cnt; for(Cnt = 0;Cnt < DTime * 300;Cnt+);unsigned char NUM10 = 0x3f,0x06,0x5b,0x4f,0

2、x66,0x6d,0x7d,0x07,0x7f,0x6f; /0 - 9 段位main() unsigned int WCnt = 0; unsigned char Minute = 12,Second = 24; while(1) switch(WCnt+ % 5) case 0: P0 = 0x01; P2 = 0x5b; break; /显示秒 case 1: P0 = 0x02; P2 = NUMSecond % 10; break; case 2: P0 = 0x04; P2 = NUMSecond / 10; break; /显示分 case 3: P0 = 0x02; P2 =

3、NUMMinute % 10; break; case 4: P0 = 0x04; P2 = NUMMinute / 10; break; Delay2ms(1); if(WCnt > 500) WCnt = 0; /记录下一个秒 Second+; if(Second > 59) Second = 0; Minute +; if(Minute > 59) Minute = 0; Hour +; if(Hour > 23) Hour = 0; Day +; if(Year%400=0) if(Month=2) if(Day>29) Day=1; Month+; if

4、(Year%400!=0) if(Month=2) if(Day>28) Day=1; Month+; switch(Month) case 12:if(Day>31) Day=1; Month=1; Year+; break; case 10:if(Day>31) Day=1; Month+; break; case 8:if(Day>31) Day=1; Month+; break; case 7:if(Day>31) Day=1; Month+; break; case 5:if(Day>31) Day=1; Month+; break; case 3

5、:if(Day>31) Day=1; Month+; break; case 1:if(Day>31) Day=1; Month+; break; case 11:if(Day>30) Day=1; Month+; break; case 9:if(Day>30) Day=1; Month+; break; case 6:if(Day>30) Day=1; Month+; break; case 4:if(Day>30) Day=1; Month+; break; /*加入平年、闰年、大月、小月的判断*/ sbit KEY = P10; /*P1口的第一个管脚为按键*/*P10 - Key1 P11 - Key2 P12 - Key3 P13 - Key4 */Delay2ms(unsigned int DTime)unsigned int Cnt;for(Cnt = 0;Cnt