Hiển thị số từ 0-9 lên led 7 thanh đơn

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#include <REGX52.H>
void delay_ms(unsigned int ms)
{
unsigned int x,y;
for(x=0;x<ms;x++)
for(y=0;y<=125;y++);
}
unsigned char seg7[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};

void main()
{
int i;
while(1)
{
for(i=0;i<10;i++)
{
P2=seg7[i];
delay_ms(1000);
}
}
}