51单片机PROTEUS超值仿真 附源程序

#include<reg51.h> #define uint unsigned int #define uchar unsigned char sbit dula=P2^6; sbit wela=P2^7; uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e}; uchar code table1[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; uchar a,b,c,bai,shi,ge,d,e,f,temp,key; void delay(uint z) { uint y; while(z--) for(y=500;y>0;y--); } /*void time0() interrupt 1 { TR0=0; TH0=(65536-50000)/256; TL0=(65536-50000)%256; a++; if(a==20) { a=0; temp++; d++; e++; f++; if(f==8)f=0; if(e==8)e=0; if(d==8)d=0; bai=temp/100; shi=temp%100/10; ge=temp%10; } TR0=1; }*/ void display(uchar bai,uchar shi,uchar ge) { wela=1; P0=table1[f]; wela=0; dula=1; P0=table[bai]; dula=0; delay(1); wela=1; P0=table1[e]; wela=0; dula=1; P0=table[shi]; dula=0; delay(1); wela=1; P0=table1[d]; wela=0; dula=1; P0=table[ge]; dula=0; delay(1); } void keyscan() { P3=0xfe; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { temp=P3; switch(temp) { case 0xee:key=1;break; case 0xde:key=2;break; case 0xbe:key=3;break; case 0x7e:key=4;break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; } } P3=0xfd; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { temp=P3; switch(temp) { case 0xed:key=5;break; case 0xdd:key=6;break; case 0xbd:key=7;break; case 0x7d:key=8;break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; } } P3=0xfb; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { temp=P3; switch(temp) { case 0xeb:key=9;break; case 0xdb:key=10;break; case 0xbb:key=11;break; case 0x7b:key=12;break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; } } P3=0xf7; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { temp=P3; switch(temp) { case 0xe7:key=13;break; case 0xd7:key=14;break; case 0xb7:key=15;break; case 0x77:key=16;break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; } } } void main() { d=0; e=1; f=2; /* TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1;*/ while(1) { keyscan(); bai=key/100; shi=key%100/10; ge=key%10; display(bai,shi,ge); } }