a.asm

40个练习程序（坚持）.rar

#include <AT89X55.H>
unsigned int t02s;
unsigned char t05ms;
bit flag;
void main (void)
{
tmod=0x01;
th0=(65536-500)/256;
tl0=(65536-500)%256;
tr0=1;
ea=1;

}