cac ban giup minh led matrix

[manh_a2k46]

Mình lập trình chữ A sáng từ phải sang trái. mình mô phỏng nhưng nó ko chạy.Các bạn kiểm tra giup mình
Minh xin cảm ơnmt.zip

[quang_le_pt]

#include<reg52.h>
void delay(unsigned int t)
{
unsigned int i;
for(i=0;i<t;i++)
;
}
int n,m,k,j;
unsigned char macot[]={0,0,0,0,0,0,0,0,0x3f,0x7f,0x88,0x88,0x7f,0x3f,0, 0,0,0,0,0,0,0,0,0,0,0,0};
unsigned char mahang[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
//unsigned char mahang[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
//unsigned char macot[8]={0x00,0X7f,0Xff,0X88,0X88,0Xff,0X7f,0X00};
void main()
{ k=0;
while(1)
{

for(m=0;m<=7;++m)
{
for(j=1;j<=200;++j)
{for(n=0;n<=7;++n)
{
P3=macot[n+k];
P2=mahang[n];
delay(10);
P2=0xff;
} }
delay(100);
k++;
if(k==20)
{k=0;
}
}
}}

[c144]

ban quang_le_pt cho minh hoi la tai sao o code cua ban phan khai bao mahang va macot lai nhieu phan tu the?
ban co the giai thich cai code ro hon cho minh hieu dc khong .minh moi hoc nen chua dc ro lam