標(biāo)題:
單片機(jī)for語句實(shí)驗(yàn)
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作者:
liuda
時(shí)間:
2015-1-21 23:01
標(biāo)題:
單片機(jī)for語句實(shí)驗(yàn)
是用51hei單片機(jī)開發(fā)板 電路圖詳見:
http://www.torrancerestoration.com/f/51hei-5.pdf
的數(shù)碼管部分, 用2個(gè)74hc573 鎖存,p0口作為數(shù)據(jù)口 ,p3.6和p3.7分別是段和位的鎖存端口.
#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)
{
uint s,sum;
for(s=50;s<=100;s=s+2)
{sum=sum+s;}
//==================
while(1)
{
D=1;P0=SEG7[sum%10];D=0;P0=0xff;V=1;P0=0xf7;V=0;delay(5);
D=1;P0=SEG7[(sum%100)/10];D=0;P0=0xff;V=1;P0=0xfb;V=0;delay(5);
D=1;P0=SEG7[(sum/100)%10];D=0;P0=0xff;V=1;P0=0xfd;V=0;delay(5);
D=1;P0=SEG7[sum/1000];D=0;P0=0xff;V=1;P0=0xfe;V=0;delay(5);
}
}
復(fù)制代碼
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