/**********************************************************************************
*  標題:                  試驗數碼管上顯示數字( 單片機直接實現位選 共陰極)        *
*      *
*  連接方法：P0與J12 用8PIN排線連接 P1與JP16 用排線連接    *
***********************************************************************************
*                                        *
* 用573鎖存器控制和單片機腳直接位選控制(非譯碼器控制)數碼管 *
***********************************************************************************/
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
void delay(uint z)
{
    uint x,y;
    for(x=z;x>0;x--)
{
for(y=0;y<113;y++)
{
}
}
}
unsigned int code dbit[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F};   
unsigned int code num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};
void main()
{
while(1)
{
P1=dbit[4];
P0=num[9];
}
}

位定義

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
uchar code num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
{
for(y=0;y<113;y++)
{
}
}
}
void main()
{
while(1)
{
LSA=0;
LSB=0;
LSC=0;
P0=num[6];
delay(2);
LSA=1;
LSB=0;
LSC=0;
P0=num[6];
delay(2);
}
}

//讓八個數碼管全部亮并且從0~9循環

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar num;
uchar wnum=0x00;
uchar code dbit[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//段選，選擇要顯示的數字
//uchar code wnum[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F};//八位數碼管   
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
{
for(y=0;y<113;y++)
{
}
}
}
void main()
{
P1=wnum;
while(1)
{
for(num=0;num<10;num++)
{
P0=dbit[num];
delay(500);
}
}
}

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