简单的51练手,下面是proteus仿真原理图:
单片机源程序:
- #include<reg52.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit key1=P3^4;
- sbit key2=P3^5;
- sbit wei4=P2^0;
- sbit wei3=P2^1;
- uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77};
- void delayms(uint);
- uchar numt0,num,flat;
- void delayms(uint xms)
- {
- uint i,j;
- for(i=xms;i>0;i--)
- for(j=110;j>0;j--);
- }
- void display(uchar numdis)
- {
- uchar shi,ge;
- shi=numdis/10;
- ge=numdis%10;
- wei4=1;
- wei3=1;
- P1=table[shi];
- wei4=1;
- wei3=0;
- delayms(5);
- wei4=1;
- wei3=1;
- P1=table[ge];
- wei4=0;
- wei3=1;
- delayms(5);
- }
- void init()
- {
- TMOD=0x01;
- TH0=(65536-45872)/256;
- TL0=(65536-45872)%256;
- EA=1;
- ET0=1;
- }
- void keyscan()
- {
- if(key1==0)
- {
- delayms(10);
- if(key1==0)
- {
- num++;
- flat++;
- if(num==99)
- num=0;
- while(!key1);
- }
- }
- if(key2==0);
- {
- delayms(10);
- if(key2==0)
- {
- if(num==0)
- num=99;
- flat=99;
- flat--;
- num--;
- while(!key2);
- }
- }
- }
- void main()
- {init();
- while(1)
- {
- keyscan();
- display(num);
- }}
- void T0_time() interrupt 1
- {TH0=(65536-45872)/256;
- TL0=(65536-45872)%256;
- numt0++;
- if(numt0==20)
- {numt0=0;
- num++;
- if(num==60)
- num=0;
- …………限于本文篇幅 余下代码请从51黑下载附件…………
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