4乘4矩阵键盘扫描加数码管显示代码.doc

4*4矩阵键盘扫描加数码管显示遵义师范学院（工学院）电气工程及其自动化黎卫星/*/*/#include#include#include#include#include/*/*/void main() displaychushihua(); while(1) num=keyjiance(); dula=1; P0=tablenum-1; dula=0; /*/*/void delay(unsigned int z)unsigned int x,y;for(x=z;x0;x-)for(y=110;y0;y-);/*/*/sbit dula = P26;sbit wela = P27;/*/*/unsigned char code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00/0x00 ;/*/*/unsigned int temp,num;/*/*/unsigned int keyjiance()/ unsigned int void P3=0XFE; / temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0)temp=P3;switch(temp)case 0xee:num=1;break;case 0xde:num=2;break;case 0xbe:num=3;break;case 0x7e:num=4;break;while(temp!=0xf0)/ temp=P3; temp=temp&0xf0; /dula=1; /P0=tablenum-1;/ dula=0; P3=0XFD; / temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0)temp=P3;switch(temp)case 0xed:num=5;break;case 0xdd:num=6;break;case 0xbd:num=7;break;case 0x7d:num=8;break;while(temp!=0xf0)/ temp=P3; temp=temp&0xf0; /dula=1;/P0=tablenum-1;/ dula=0; P3=0XFB; / temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0)temp=P3;switch(temp)case 0xeb:num=9;break;case 0xdb:num=10;break;case 0xbb:num=11;break;case 0x7b:num=12;break;while(temp!=0xf0)/ temp=P3; temp=temp&0xf0;/ dula=1;/ P0=tablenum-1;/ dula=0; P3=0XF7; / temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0)temp=P3;switch(temp)case 0xe7:num=13;break;case 0xd7:num=14;break;case 0xb7:num=15;break;case 0x77:num=16;break;while(temp!=0xf0)/ temp=P3; temp=temp&0xf0; /dula=1;/P0=tablenum-1;/dula=0; return (num);/ / dula=1;/ P0=tablenum-1;/ dula=0; /*