基于at89c51单片机c语言编写的计算器

1、#include#defineuintunsignedint#defineucharunsignedcharsbitdula=P2A6;sbitwela=P2A7；sbitkey1=P3A4;ucharcodetable=0 x3f,0 x06,0 x5b,0 x4f,0 x66,0 x6d,0 x7d,0 x07,0 x7f,0 x6f,0 x77,0 x7c,0 x39,0 x5e,0 x79,0 x71,0;ucharnum,temp,num1;voiddelay(uintz)uintx,y;for(x=z;x0;x-)for(y=110;y0;y-);ucharkeyscan();vo

2、iddisplay(ucharaa);voidmain()num=17;dula=1;P0=0;dula=0;wela=1;P0=0 xc0;wela=0;while(1)display(keyscan();voiddisplay(ucharaa)dula=1;P0=tableaa-1;dula=0;ucharkeyscan()P3=0 xfe;temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)delay(5);temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)temp=P3;switch(temp)case0 xee:num

3、=1;break;case0 xde:num=2;break;case0 xbe:num=3;break;case0 x7e:num=4;break;while(temp!=0 xf0)temp=P3;temp=temp&0 xf0;P3=0 xfd;temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)delay(5);temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)temp=P3;switch(temp)case0 xed:num=5;break;case0 xdd:num=6;break;case0 xbd:num=7;b

4、reak;case0 x7d:num=8;break;while(temp!=0 xf0)temp=P3;temp=temp&0 xf0;P3=0 xfb;temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)delay(5);temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)temp=P3;switch(temp)case0 xeb:num=9;break;case0 xdb:num=10;break;case0 xbb:num=11;break;case0 x7b:num=12;break;while(temp!=0 xf0)temp=P3;temp=temp&0 xf0;P3=0 xf7;temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)delay(5);temp=P3;temp=temp&0 xf0;while(temp!=0 xf0)temp=P3;switch(temp)case0 xe7:num=13;break;case0 xd7:num=14;break;case0 xb7:num=15;break;c