miaobiao.rar_miaobiao_秒表 LCD

#include <reg52.h> #define uint unsigned int #define uchar unsigned char uchar tt=0,temp,m1=0,m2=0,m3=0,m4=0,m5=0,m6=0,line=0; uchar code table[]={ 0x3f, 0x06,0x5b,0x4f, 0x66,0x6d,0x7d, 0x07,0x7f,0x6f}; void delay(uchar d) { uchar i=11; while(d--) while(i--) ; } void display() { P1=0xfe; P0=table[m1]; delay(1); P1=0xfd; P0=table[m2]; delay(1); P1=0xfb; P0=table[m3]; delay(1); P1=0xfb; P0=0x80; delay(1); P1=0xf7; P0=table[m4]; delay(1); P1=0xef; P0=table[m5]; delay(1); P1=0xdf; P0=table[m6]; delay(1); } uchar jian() { uchar line=0; P2=0x0f; if((P2&0x0f)!=0x0f) { delay(10); if((P2&0x0f)!=0x0f) { temp=P2&0x0f; switch(temp) { case 0x07: line=1; break; case 0x0b: line=2; break; case 0x0d: line=3; break; case 0x0e: line=4; break; } } } while((P2&0x0f)!=0x0f) display(); return line ; } void main() { EA=1; TR0=1; TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; while(1) { display(); switch(jian()) { loop1: case 1: ET0=1; m1=m2=m3=m4=m5=m6=0;break; case 2: ET0=0;while(1){ display(); switch(jian()) { case 1: goto loop1; case 3: {ET0=1;goto loop2;} case 4: goto loop3; } } break; loop3: case 4: ET0=0;m1=m2=m3=m4=m5=m6=0;P3=0xff;break; loop2: default : break; } } } void time() interrupt 1 { TH0=(65536-4610)/256; TL0=(65536-4610)%256; tt++; display(); if(tt==2) { tt=0; m1++; if(m1==10) { m1=0; m2++; P3=0xaa; if(m2==10) { m2=0; m3++; P3=0x55; if(m3==10) { m3=0; m4++; if(m4==10) { m4=0; m5++; if(m5==10) { m5=0; m6++; if(m6==10) m6=0; } } } } } } }