简易计时计数器51单片机

#include <reg51.h> #include <intrins.h> sbit a=P2^7; sbit b=P2^6; sbit c=P2^5; sbit k4=P3^3; sbit k3=P3^2; sbit k2=P3^1; sbit q1=P2^4; sbit led=P2^0; void delay (int q) { while(q--); } char l=0,m=0,n=0; int j=0; void keyscan(); char num2,shi,ge,bai,num3,num4; int num,num1; void keyscan() { if(k2==0) { delay(1000); if(k2==0) TR1=~TR1; while(!k2); } } void T0_time()interrupt 1 { TH0=(65336-50000)/256; TL0=(65336-50000)%256; num1++; } void T1_time() interrupt 3 { TH1=(65336-50000)/256; TL1=(65336-50000)%256; num2++; num3++; if (num2==2) { num2=0; num++; num1++; if(num==550||num==560||num==570||num==580||num==590) { int o; for(o=0;o<500;o++) {q1=~q1; delay(10); } } if(num==600) { TR1=0;TR0=0; num=0; } bai=num/100; shi=num/10%10; ge=num%10; } } char code smgduan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; char code table2[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87, 0xff,0xef,0x77,0x7c,0x39,0x5e,0x79,0x71}; void zduan0() interrupt 0 { if(k3==0) delay(1000); if(k3==0) { j=j-1; } } void zduan1() interrupt 2 { if(k4==0) delay(1000); if(k4==0) { j=j+1; } } void zdkai0() { EA=1; EX0=1; IT0=1; } void zdkai1() { EA=1; EX1=1; IT1=1; } void shaomiao() { char i; for (i=0;i<6;i++) { switch (i) { case (0): a=0;b=1;c=0;P1=smgduan[ge];break; case (1): a=1;b=0;c=0;P1=table2[shi];break; case (2): a=0;b=0;c=0;P1=smgduan[bai];break; case (3): a=1;b=0;c=1;P1=smgduan[l];break; case (4): a=0;b=0;c=1;P1=smgduan[m];break; case (5): a=1;b=1;c=0;P1=smgduan[n];break; } delay(300); P1=0x00; } } void main() { led=1; TMOD=0x11; TH0=(65336-50000)/256; TL0=(65336-50000)%256; TH1=(65336-50000)/256; TL1=(65336-50000)%256; EA=1; ET0=1; ET1=1; TR0=1; TR1=0; zdkai0(); zdkai1(); while(1000) { keyscan(); shaomiao(); if(j<0) { j=0; } else if(j<100) { n=0; l=j%10; m=j/10; } else if(j==100) { l=1; n=0; m=0; } else { j=0; n=0; l=0; m=0; } } }