#include <REGX52.H>
void Delay1ms(unsigned int xms); //@12.000MHz
void main()
{
while(1)
{
P2=0xFE;//1111 1110
Delay1ms(1000);
P2=0xFD;//1111 1101
Delay1ms(1000);
P2=0xFB;//1111 1011
Delay1ms(100);
P2=0xF7;//1111 0111
Delay1ms(100);
P2=0xEF;//1110 1111
Delay1ms(100);
P2=0xDF;//1101 1111
Delay1ms(100);
P2=0xBF;//1011 1111
Delay1ms(100);
P2=0x7F;//0111 1111
Delay1ms(100);
}
}
void Delay1ms(unsigned int xms) //@12.000MHz
{
unsigned char i, j;
while(xms)
{
i = 2;
j = 239;
do
{
while (--j);
} while (--i);
xms--;
}
}
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