问一下这个二级中断系统的流程图怎么画
#include <reg51.h>char led_mod[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit D1=P3^0;
void delay(unsigned int time){
unsigned int j = 0;
for(;time>0;time--)
for(j=0;j<125;j++);
}
Key1()interrupt 0{ //K1中断函数
D1=!D1;
}
Key2()interrupt 2{ //K2中断函数
unsigned char i;
for (i=0;i<=9;i++)
{
P2= led_mod;
delay(1000);}
P2=0x40;
void main()
{
TCON=0x05;
PX0=0;
PX1=0;
D1=1;
P2=0;
IE=0x85;
while(1);
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