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標(biāo)題:
24秒倒計(jì)時(shí)
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作者:
edc、
時(shí)間:
2018-7-12 11:35
標(biāo)題:
24秒倒計(jì)時(shí)
#include<stc12c5a60s2.h>
sbit LED=P2^0;
sbit BEEP=P1^0;
sbit CLEAR=P3^3;
sbit START=P3^2;
typedef unsigned int uint;
typedef unsigned char uchar;
void delay(unsigned int i)
{
while(i--);
}
void main()
{
uint T_Count=0;
uchar count;
LED=1;
BEEP=1;
CLEAR=1;
START=1;
TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
while(START);
TR0=1;
count=48;
while(1)
{
if(TF0==1)
{
TF0=0;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
if(++T_Count==10)
{
T_Count=0;
LED=~LED;
count--;
if(count==0)
while(CLEAR)
{
BEEP=1;
delay(200);
}
BEEP=1;
while(START);
count=48;
}
}
}
}
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