#include "reg52.h"
typedef unsigned int u16;
typedef unsigned char u8;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
sbit K1=P1^0;
u8 i=0;
u8 j=0;
u8 code smgduan[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(u16 i)
{
while(i--);
}
void keypush()
{
if (K1==0)
{
delay(1000);
if (K1==0)
{
j++;
}
while(!K1);
}
}
void DigDisplay()
{
switch(j)
{
case(0):
case(15):
LSA=0;LSB=0;LSC=0; break;
case(1):
case(14):
LSA=1;LSB=0;LSC=0; break;
case(2):
case(13):
LSA=0;LSB=1;LSC=0; break;
case(3):
case(12):
LSA=1;LSB=1;LSC=0; break;
case(4):
case(11):
LSA=0;LSB=0;LSC=1; break;
case(5):
case(10):
LSA=1;LSB=0;LSC=1; break;
case(6):
case(9):
LSA=0;LSB=1;LSC=1; break;
case(7):
case(8):
LSA=1;LSB=1;LSC=1; break;
}
P0=smgduan[j];
delay(5000);
P0=0x00;
}
void main()
{
while(1)
{
DigDisplay();
keypush();
if (j>15)
{
j=0;
}
}
} |
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