独立键盘程序

ID:82008 · 发表于 2015-6-5 00:30

#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit duxu=P2^6;
sbit wexu=P2^7;
sbit key=P3^4;
uchar num;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}

void main()
{
wexu=1;
P0=0xfd;
wexu=0;
P3=0xff;
while(1)
{

if(key==0)
{
delay(5);
if(key==0)
{
num++;
if(num==16)
num=0;
while(!key);
delay(5);
while(!key);
}
}
duxu=1;
P0=table[num];
duxu=0;
}

}

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