標(biāo)題:
單片機(jī)數(shù)碼管動(dòng)態(tài)掃描
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作者:
liuda
時(shí)間:
2015-1-21 23:31
標(biāo)題:
單片機(jī)數(shù)碼管動(dòng)態(tài)掃描
是用51hei單片機(jī)開(kāi)發(fā)板 電路圖詳見(jiàn):
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 ,注意圖中要改一下p3.6和p3.7分別是段和位的鎖存端口.P2口上面是按鍵 p1口上面是8個(gè)led燈.
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code DIS_SEG7[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
uchar code DIS_BIT[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
sbit D=P3^6;
sbit V=P3^7;
//==============
void delay(uint k)
{
uint data i,j;
for(i=0;i<k;i++){
for(j=0;j<121;j++)
{;}}
}
//===================
void main(void)
{
uchar cnt;
while(1)
{
for(cnt=0;cnt<8;cnt++)
{D=1;P0=DIS_SEG7[cnt+1];D=0;P0=0xff;V=1;P0=DIS_BIT[cnt];V=0;
delay(1);}
}
}
復(fù)制代碼
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