51单片机矩阵键盘+单个数码管显示仿真

ID:203422 · 发表于 2017-5-22 12:08

矩阵键盘+单个数码管

仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）

单片机源程序如下:

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
unsigned char code table[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0X88,0x83,0xc6,0xa1,0x86,0x8e,0xbf};
void delaylms(uint i)
{
uchar j;
while(i--)
{
for(j=0;j<115;j++)
{
;
}
}
}
void display(unsigned char i)
{
P0=table[i];
}
void main(void)
{
unsigned char temp;
display(16);
while(1)
{
P1=0xf0;
temp=P1;
if(temp!=0xf0)
{
delaylms(15);
if(temp!=0xf0)
{
P1=0xfe;
temp=P1;
switch(temp)
{
case(0xee):display(0);break;
case(0xde):display(1);break;
case(0xbe):display(2);break;
case(0x7e):display(3);break;
}
P1=0xfd;
temp=P1;
switch(temp)
{
case(0xed):display(4);break;
case(0xdd):display(5);break;
case(0xbd):display(6);break;
case(0x7d):display(7);break;
}
P1=0xfb;
temp=P1;
switch(temp)
{
case(0xeb):display(8);break;
case(0xdb):display(9);break;
case(0xbb):display(10);break;
case(0x7b):display(11);break;
}
P1=0xf7;
temp=P1;
……………………
…………限于本文篇幅余下代码请从51黑下载附件…………