编写程序让数码管同时显示零

此实验是共阳极写法

程序：
#include <reg51.h>
unsigned char segment[]= {0xff,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
unsigned char k=0;
int main(void)
{
TMOD=0x00;
TL0=(8192-2000)%32;
TH0=(8192-2000)/256;
TR0=1;
EA=1;
ET0=1;
while(1);
}
void T0_timer(void)interrupt 1
{
P0=0xc0;
P2=segment[k++];
if(k==9)
k=0;
TL0=(8192-2000)%32;
TH0=(8192-2000)/256;
}

实验视频：

https://www.bilibili.com/video/BV12U4y1x7y8/