新手求助,简单问题望大家帮忙
本帖最后由 辉Se天空 于 2012-5-6 15:34 编辑一个键盘控制
ps :上传一个电路图请大家帮忙看看吧,我想实现的功能时按键使数码管显示1234567890abcdef
代码:#include<reg52.h>
#define unt unsigned int
#define unc unsigned char
unc t=0x3f;
void delay(unsigned int x)
{
unsigned i,j;
for(i=0;i<x;i++)
for(j=0;j<1827;j++);
}
unc a= {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
uncb={0x80,0x40,0x20,0x10};
main()
{unc i;
while(1)
{
P1=0xf0;
if(P1^0xf0){
delay(2);
if(P1^0xf0){
delay(2);
if(P1^0xf0){
for(i=0;i<4;i++)
{
P1 = b;
if(P1^b == 0x08) t = a;
if(P1^b == 0x04) t = a;
if(P1^b == 0x02) t = a;
if(P1^b == 0x01) t = a;
}
}
}
}
P0=t;
delay(2);
}
}
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