smg.zip_keil里smg

#include<reg52.h> #define uchar unsigned char #define uint unsigned int #define hw 0xfe //显示小时的位置 #define mw 0xf7 //显示分钟的位置 #define sw 0xbf //显示秒的位置 uchar code led[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40}; uchar hour,min,sec; bit flag; void delay(uint com) { while(com--); } void init() { TMOD=0X01; TH0=0X3c; TL0=0xb0; TR0=1; EA=1; ET0=1; } void display(uchar add,uchar com) { P0=*(led+com/10); P1=add; delay(30); P0=*(led+com%10); P1=~(~add<<1); delay(30); if(flag) { P0=0x40; P1=0xdb; delay(30); } } void disp() { display(hw,hour); display(mw,min); display(sw,sec); } void main() { delay(10); init(); while(1) { disp(); } } void time() interrupt 1 { static uchar i; TH0=0X3C; TL0=0XB0; i++; if(i==10){flag=!flag;} if(i==20) { flag=!flag; i=0; sec++; if(sec==60) { sec=0; min++; if(min==60) { min=0; hour++; if(hour==24) { hour=0; } } } } }