基于51单片机的数码管简易计算器Word文档下载推荐.docx

1、五、软件编程部份#include#defineuchar unsigned char #defineuintunsigned int/uchar code num=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40;/共阴极/0123456789熄灭-/uchar code loc=0xff,0xfe,0xfd,0xfb,0xf7;/uchar code ero=0x79,0x50,0x5c;uchar code num=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xf

2、f,0x40;/共阳极uchar code loc=0x00,0x80,0x40,0x20,0x10; uchar code ero=0x79,0x50,0x5c;uintn=0,n1=0,n2=0;/赋初值uchar flag=0;/计算类型选择关键字void delay（int t）;void display（int n）; void error（）;main（）while（1）uchar temp;/第一行检测P3=0xfe; temp=P3; temp=temp&0xf0; if（temp!=0xf0）delay（10）;0xfe;=0xfe）temp=P3; switch（temp）

3、/清零/0/=case0xee:n1=0;n2=0;n=0;flag=0;break; case 0xde:n1=10*n1+0;n=n1;case0xbe:if（flag=1）n=n2+n1;if（flag=2）n=n2-n1; if（flag=3）n=n2*n1; if（flag=4）n=n2/n1;case 0x7e:/ + n2=n1;flag=1;while（temp!/扫描第二行P3=0xfd;case 0xed:n1=10*n1+1;/4case 0xdd:n1=10*n1+2;/5case 0xbd:n1=10*n1+3;/6 case 0x7d:/ -n2=n1;flag=2

4、;/扫描第三行P3=0xfb;/ *case 0xeb:n1=10*n1+4; case 0xdb:n1=10*n1+5; case 0xbb:n1=10*n1+6;case0x7b:flag=3;/扫描第四行P3=0xf7;case 0xe7:n1=10*n1+7;/7case 0xd7:n1=10*n1+8;/8case 0xb7:n1=10*n1+9;/9case 0x77:/ /flag=4;display（n）;/ 延 时 函 数 void delay（int t）int x,y; for（x=0;xt;x+）for（y=0;y9999）|（n=0）&（n=10）P0=nums; P2=loc3;if（n=100）P0=numb; P2=loc2;=1000）P0=numq; P2=loc1;/负数if（n=-999）abs=-n; g=abs%10; s=abs/10%10; b=abs/100%10; q=abs/1000%10; P0=numg;if（abs/10%100）|（abs/100%100）P2=loc3;delay（2）;if（abs/100%10if（abs/1000%10elseP0=num11;/溢出显示void error（）P2=loc1; P0=ero0;P2=loc2; P0=ero1;P2=loc4;P0=ero2;