单片机编程，快，急

Question

如题所述

Answer 1

#include<reg51.h>
#define uchar unsigned char
uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f};
uchar dat;
sbit p10=P1^0;
bit flag=0;
void delay(uchar a)
{
uchar i;
while(a--)
for(i=0;i<120;i++);
}
void ext1() interrupt 2
{
flag=1;
}
main()
{
EX1=1;
IT1=0;
EA=1;
while(1)
{
 if(flag)
  {
p10=~p10;
delay(200);

}
}
}