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#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit SET1=P2^4 ; sbit SET2 =P2^5; sbit SET3 =P2^6; sbit SET4 =P2^7; uchar code seg7code[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; void delay(uchar t) //延时程序1 { uchar j; while(t--) {for(j=50;j>0;j--);} } void display () { P2=P2|0XF0; P0=~seg7code[1]; SET1=0; delay(10); P2=P2|0XF0; P0=~seg7code[2]; SET2=0; delay(10); P2=P2|0XF0; P0=~seg7code[3]; SET3=0; delay(10); P2=P2|0XF0; P0=~seg7code[4]; SET4=0; delay(10); P2=P2|0XF0; } void main() { P1=0XFF; P2=0XFF; P3=0XFF; P0=0XFF; while(1) { display(); } }
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