clock.c

一个本人编写的时钟程序

#include<C:\Keil\C51\INC\Intel\reg51F.h>
			 
  sbit  led1=P1^3;  /* 4位数码管选通引脚 */
  sbit  led2=P1^4;	  
  sbit  led3=P1^6;
  sbit  led4=P1^7;
  sbit  led2dz=P1^5;  /*小数点 */

  sbit  ls164_ab=P3^0; /*74LS164数据线 */
  sbit  ls164_clk=P3^1; /*74LS164时钟线 */

  sbit  key1=P3^5; /*按键1   */
  sbit  key2=P3^7; /*按键2   */

  /*DISPFLAG   EQU  40H /*  /*显示标识  */

  sbit  key1flag=P3^2;
  sbit  key2flag=P3^3;

  /* DISPBUF   EQU  20H
     DISPBUF1  EQU  50H */ /*定时缓冲	 */

  sbit  beep=P1^0;

  /* MSCNT  EQU  30H */   /*中断次数  */

  /* 
  SECONDBUF  EQU 31H
  MINUTEBUF  EQU 32H
  HOURBUF    EQU 33H
  MONTHBUF   EQU 34H
  DAYBUF     EQU 35H
  MINUTEBUF1 EQU 36H
  HOURBUF1   EQU 37H  */
static const char sag_led1[10]=
{0x50,0xF9,0x34,0xB0,0x99,0x92,0x12,0xF8,0x10,0x90}; 
static const char sag_led234[10]=
{0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};

void delay (unsigned int val)
 { while (val!=0) val--;  
 }				  

void disp(void) 
{ int i,s;
  
  for(i=1;i<9;i++)
  s=sag_led1[1];
  s<<1 ;
  if(AC==1)
  ls164_ab=1;
  else 
  ls164_ab=0;
  ls164_clk=1;
  ls164_clk=0 ;

}


main()
{
  
}