计数器程序(16)

C语言编写的基于单片机的计数器程序

P3=0xf7; temp=P3; temp=temp&0xf0; while(temp!=0xf0)

{

delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0) {

temp=P3;

switch(temp)

{

case 0xe7:nume--;

total--;

write_com(0x80+0x41); delay(5);

write_data(nume); delay(5);

write_com(0x80+0x53);