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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar num;
void main()
{
TMOD=0x01;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
EA=1;
ET0=1;
TR0=1;
P1=0xFF;
while(1);
}
void T0_time() interrupt 1
{
  ......
[root@localhost test]# hexdump -s 0 -n 52 -C helloworld
00000000 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 |.ELF............|
00000010 02 00 03 00 01 00 00 00 10 83 04 08 34 00 00 00 |............4...|
00000020 30 08 00 00 00 00 00 00 34 00 20 ......
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#define uchar unsigned char
#define uint unsigned int
#include <intrins.h>
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