标题:
单片机break continue语句实验
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作者:
liuda
时间:
2015-1-21 23:02
标题:
单片机break continue语句实验
是用51hei单片机开发板 电路图详见:
http://www.51hei.com/f/51hei-5.pdf
的数码管部分, 用2个74hc573 锁存,p0口作为数据口 ,p3.6和p3.7分别是段和位的锁存端口.
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit D=P3^6;
sbit V=P3^7;
//==================
void delay(uint k)
{
uint i,j;
for(i=0;i<k;i++){
for(j=0;j<121;j++)
{;}}
}
//================
void main(void)
{
uchar cnt=0;
D=1;P0=SEG7[0];D=0;P0=0xff;V=1;P0=0xf7;V=0;delay(5);
while(1)
{
for(cnt=0;cnt<10;cnt++)
{
if(cnt<5)break;
D=1;P0=SEG7[cnt];D=0;P0=0xff;V=1;P0=0xf7;V=0;delay(5);
delay(1000);
}
}
}
复制代码
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit D=P3^6;
sbit V=P3^7;
//==================
void delay(uint k)
{
uint i,j;
for(i=0;i<k;i++){
for(j=0;j<121;j++)
{;}}
}
//================
void main(void)
{
uchar cnt=0;
D=1;P0=SEG7[0];D=0;P0=0xff;V=1;P0=0xf7;V=0;delay(5);
while(1)
{
for(cnt=0;cnt<10;cnt++)
{
if(cnt<5)continue;
D=1;P0=SEG7[cnt];D=0;P0=0xff;V=1;P0=0xf7;V=0;delay(5);
delay(1000);
}
}
}
复制代码
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