單片機(jī)--數(shù)碼管顯示模塊（C51）

#include < reg52.h >

#define uchar unsigned char

#defind uintunsigned int

sbit seg_oe=P1^3;//數(shù)碼管顯示使能端，低電平有效

sbit duanxuan=P1^4;//數(shù)碼管的段選端

sbit weixuan=P1^5;//數(shù)碼管的位選端

uchar code smg_duan[30]={//數(shù)碼管段選碼表，我們的數(shù)碼管是共陰極數(shù)碼管

0x3F,0x06,0x5B,0x4F,

0x66,0x6d,0x7d,0x07,

0x7f,0x6f,0x77,0x7c,

0x39,0x5e,0x79,0x71, }; //這是共陰極數(shù)碼管0-E的顯示碼表

uchar code smg_wei[8]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};//選擇亮哪一個(gè)數(shù)碼管，也就是數(shù)碼管的位選信號

void seg_disp(uchar wei,uchar duan)//單個(gè)數(shù)碼管的顯示

{

weixuan=1;

P0=smg_wei[wei];

weixuan=0;

duanxuan=1;

P0=smg_duan[duan];

duanxuan=0;

seg_oe=0;

delay10ms();?

seg_oe=1;

}

void delay10ms() //延時(shí)子程序

{

uchari,j;

for(i=1;i<40;i++)

for(j=1;j<40;j--);

}