CT107D-按键的使用(中断法)
#include <reg52.h>
int main()
{
IE|=0x85;
TCON|=0x05;
while(1);
return 0;
}
void key_32(void) interrupt 0
{
P2=(P2&0x1f)|0x80;
P0=0x00;
P2&=0x1f;
}
void key_33(void) interrupt 2
{
P2=(P2&0x1f)|0x80;
P0=0xff;
P2&=0x1f;
}


