单片机IO口扩展设计(4)

单片机IO口扩展设计

{0x00,0x00,0x78,0x48,0x7C,0x00,0x00,0x00},/*"b",12*/

{0x00,0x00,0x00,0x48,0x48,0x70,0x00,0x00},/*"c",13*/

{0x00,0x00,0x00,0x7C,0x48,0x78,0x00,0x00},/*"d",14*/

{0x00,0x00,0x58,0x58,0x70,0x00,0x00,0x00},/*"e",15*/

{0x00,0x00,0x00,0x4C,0x7C,0x48,0x00,0x00},/*"f",16*/

{0x00,0x08,0xD8,0xD8,0xF8,0x00,0x00,0x00},/*"g",17*/

{0x00,0x00,0x78,0x08,0x7C,0x00,0x00,0x00},/*"h",18*/

{0x00,0x00,0x40,0x7C,0x48,0x00,0x00,0x00},/*"i",19*/

{0x00,0x00,0x00,0xFC,0x88,0x00,0x00,0x00},/*"j",20*/

{0x00,0x00,0x48,0x78,0x7C,0x00,0x00,0x00},/*"k",21*/

{0x00,0x00,0x40,0x7C,0x44,0x00,0x00,0x00},/*"l",22*/

{0x00,0x00,0x00,0x78,0x78,0x78,0x00,0x00},/*"m",23*/

{0x00,0x00,0x78,0x08,0x78,0x00,0x00,0x00},/*"n",24*/

{0x00,0x00,0x30,0x48,0x48,0x30,0x00,0x00},/*"o",25*/

{0x00,0x00,0x78,0xC8,0xF8,0x00,0x00,0x00},/*"p",26*/

{0x00,0x00,0x00,0xF8,0xC8,0x78,0x00,0x00},/*"q",27*/

{0x00,0x00,0x08,0x48,0x78,0x48,0x00,0x00},/*"r",28*/

{0x00,0x00,0x68,0x68,0x58,0x00,0x00,0x00},/*"s",29*/

{0x00,0x00,0x00,0x40,0x7C,0x08,0x00,0x00},/*"t",30*/

{0x00,0x00,0x78,0x40,0x78,0x00,0x00,0x00},/*"u",31*/

{0x00,0x08,0x38,0x40,0x38,0x08,0x00,0x00},/*"v",32*/

{0x00,0x08,0x78,0x18,0x68,0x18,0x00,0x00},/*"w",33*/

{0x00,0x00,0x48,0x78,0x78,0x48,0x00,0x00},/*"x",34*/

{0x00,0x00,0x08,0x38,0xD8,0x88,0x00,0x00},/*"y",35*/

{0x00,0x00,0x48,0x78,0x68,0x00,0x00,0x00}/*"z",36*/

};

void delay(void);

int8 n;

int8 delta_p;

int8 *p;

void main(void){

int8 i;

int8 j;

p=&num_tab[0][0];

TMOD=0x01;

TH0=0xfc;

TL0=0x18;

ET0=1;

EA=1;

TR0=1;

while(1)

{

for(i=0;i<8;i++){

delay();