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楼主 |
发表于 2012-9-28 17:06:13
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#include<reg52.h>
#define uchar unsigned char
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
sbit dc=P1^1;
sbit dula=P1^0;
sbit key1=P2^7;
sbit key2=P2^6;
uchar level,count;
void delayms(uchar z);
void keyscan();
void T0_init();
void main()
{
dula=1;
T0_init();
while(1)
{
keyscan();
if(count<=level)
dc=0;
else dc=1;
if(count>=11)
count=1;
P0=table[level];
}
}
void T0_init()
{
EA=1;
ET0=1;
TMOD=0x01;
TH0=(65536-10)/256;
TL0=(65536-10)%256;
TR0=1;
}
void T0_time() interrupt 1
{
TH0=(65536-10)/256;
TL0=(65536-10)%256;
count++;
}
void keyscan()
{
if(key1==0)
{
delayms(10);
if(key1==0)
{
while(!key1);
level+=2;
if(level>=11)
level=10;
}
}
if(key2==0)
{
delayms(10);
if(key2==0)
{
while(!key2);
delayms(10);
if(level>=2)
level-=2;
if(level<=0)
level=2;
}
}
}
void delayms(uchar z)
{
uchar i,j;
for(i=z;i>0;i--)
for(j=z;j>0;j--);
}
希望各位高手能指点指点,上边有图。多谢 |
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