原创 595 驱动数码管C程序

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit SH_cp=P3^0;
sbit ST_cp=P3^2;
sbit DS="P3"^1;
unsigned char code seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,
      0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0x00,0xff};
void delay(uint t)
{
 uint i;
 while(t--)
 for(i=0;i<125;i++);
}
void write(uchar date)
{
 uchar i;
 SH_cp = 0;
 for(i=8;i>0;i--)
 {
  DS=(bit)(date&0x01);
  SH_cp=1;   
  _nop_();
  SH_cp=0;
  date>>=1;  
         
 }
}

void main()
{
  write(0xc0);
  write(0xf9);
  write(0xa4);
  ST_cp=0;
  _nop_();
  ST_cp=1;
  ST_cp=0;
  while(1);
}