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- #include"reg52.h"
- #include"intrins.h"
- #define uint unsigned int
- #define uchar unsigned char
- #define dat P3
- void delay(uint n);
- void main()
- { uint i;
- while(1)
- {
- for(i=0;i<4;i++)
- {
-
-
- if(i==0){dat=0x7e;}
- if(i==1){dat=0xbd;}
- if(i==2){dat=0xdb;}
- if(i==3){dat=0xe7;}
- delay(200);}
- }
- }
- void delay(uint n)
- {
- uint i;
- while(n--)
- {
- for(i=0;i<125;i++);
- }
- }
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