Bin.c51

#pragma cd

#include<reg51.h>

#define B8(y)  ( 0##y       &   1 \

    | 0##y >>  2 &   2 \

    | 0##y >>  4 &   4 \

    | 0##y >>  6 &   8 \

    | 0##y >>  8 &  16 \

    | 0##y >> 10 &  32 \

    | 0##y >> 12 &  64 \

    | 0##y >> 14 & 128 )

test()

{

  P0 = B8(1);

  P0 = B8(11);

  P0 = B8(111);

  P0 = B8(0000111);

  P0 = B8(1000);

  P0 = B8(10000000);

  P0 = B8(11111111);

}