基于单片机的计数器

******************************************************************/ #include

#define uchar unsigned char unsigned long num; uchar j,k;

uchar a0,b0,c0,d0,e0,f0,g0,h0; sbit dula=P2^6; sbit wela=P2^7; sbit s2=P3^4; sbit s3=P3^5;

unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,

0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};

void delay(uchar i) { for(j=i;j>0;j--) for(k=125;k>0;k--); }

void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f,uchar g,uchar h) {

dula=0; P0=table[a]; dula=1; dula=0;

wela=0; P0=0xfe; wela=1; wela=0; delay(5);

P0=table[b]; dula=1; dula=0;

P0=0xfd; wela=1; wela=0; delay(5);

P0=table[c]; dula=1; dula=0;

P0=0xfb; wela=1;

wela=0; delay(5);

P0=table[d]; dula=1; dula=0;

P0=0xf7; wela=1; wela=0; delay(5);

P0=table[e]; dula=1; dula=0;

P0=0xef; wela=1; wela=0; delay(5);

P0=table[f]; dula=1; dula=0;

P0=0xdf; wela=1; wela=0; delay(5);

P0=table[g];

dula=1; dula=0;

P0=0xbf; wela=1; wela=0; delay(5);

P0=table[h]; dula=1; dula=0;

P0=0x7f; wela=1; wela=0; delay(5); }

void keyscan() { if(s2==0) { while(s2==0); num++; } if(s3==0) { while(s3==0); num=0; } }

void main() { while(1) { keyscan(); if(num<10) { a0=num;b0=16;c0=16;d0=16;e0=16;f0=16;g0=16;h0=16; } else { if(num<100)

{a0=num/10;b0=num%10;c0=16;d0=16;e0=16;f0=16;g0=16;h0=16;} else { if(num<1000) {a0=num/100;b0=num%100/10;c0=num%10;d0=16;e0=16;f0=16;g0=16;h0=16;} else { if(num<10000) {a0=num/1000;b0=num%1000/100;c0=num%100/10;d0=num%10;e0=16;f0=16;g0=16;h0=16;} else { if(num<100000) {a0=num/10000;b0=num%10000/1000;c0=num%1000/100;d0=num%100/10;e0=num%10;f0=16;g0=16;h0=16;} else { if(num<1000000) {a0=num/100000;b0=num%100000/10000;c0=num%10000/1000;d0=num%1000/100;e0=num%100/10;f0=num%10;g0=16;h0=16;} else { if(num<10000000)

{a0=num/1000000;b0=num%1000000/100000;c0=num%100000/10000;d0=num%10000/1000;e0=num%1000/100;f0=num%100/10;g0=num%10;h0=16;} else { if(num<100000000) {a0=num/10000000;b0=num%10000000/1000000;c0=num%1000000/100000;d0=num%100000/10000;e0=num%10000/1000;f0=num%1000/100;g0=num%100/10;h0=num%10;} } } } } } } } display(a0,b0,c0,d0,e0,f0,g0,h0); }

}