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#include<reg52.h> #define uint unsigned int #define uchar unsigned char sbit dula=P2^6; sbit wela=P2^7; sbit d1=P1^0; uchar num; uchar code table[]={ 0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71}; void delay(uint z); void main() { EA=1;//开总中断 EX0=1;//开外部中断0 //IT0=1; TCON=0x01; wela=1;//11101010 P0=0xea; wela=0; while(1) { for(num=0;num<16;num++) { d1=1; dula=1; P0=table[num]; dula=0; delay(1000); } } } void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void exter0() interrupt 0 { d1=0; }