6-5練習 1 2 3 00-99 keil c

#include "reg51.h"
main()
{
  void delay(int);
  int i,j;
char seg[10]={0xC0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
while(1)
  {
for(i=0;i<100;i++)
{
for(j=0;j<50;j++)
{
P2=0x0d;
P1=seg[i/10];
delay(200);
P2=0x0e;
P1=seg[i%10];
delay(200);
}
}
  }
}
void delay(int count)
{
  int i;
  for(i=1;i<=count;i++)
  ;
}
例:99-0
#include "reg51.h"
main()
{
  void delay(int);
  int i,j;
char seg[10]={0xC0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
while(1)
  {
for(i=99;i>=0;i--)
{
for(j=0;j<50;j++)
{
P2=0x0d;
P1=seg[i/10];
delay(200);
P2=0x0e;
P1=seg[i%10];
delay(200);
}
}
  }
}
void delay(int count)
{
  int i;
  for(i=1;i<=count;i++)
  ;
}
例:00-59
#include "reg51.h"
main()
{
  void delay(int);
  int i,j;
char seg[10]={0xC0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
while(1)
  {
for(i=0;i<60;i++)
{
for(j=0;j<50;j++)
{
P2=0x0d;
P1=seg[i/10];
delay(200);
P2=0x0e;
P1=seg[i%10];
delay(200);
}
}
  }
}
void delay(int count)
{
  int i;
  for(i=1;i<=count;i++)
  ;
}
例:00-59閃爍
#include "reg51.h"
main()
{
  void delay(int);
  int i,j;
int x=0;
char seg[10]={0xC0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
while(1)
  {
for(i=0;i<60;i++)
{
for(j=0;j<25;j++)//本來50 拆成前25次是亮 後25次是off
{
P2=0x0d;
P1=seg[i/10];
delay(200);
P2=0x0e;
P1=seg[i%10];
delay(200);
}
for(j=0;j<25;j++)
{
P2=0xff;
P1=0xff;
delay(200);
}
}
  }
}
void delay(int count)
{
  int i;
  for(i=1;i<=count;i++)
  ;
}