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// After #include <this file>   you can  
// use b_1010_1100 isted of 0b10101100 
 
#define b_0000_0000 0 
#define b_0000_0001 1 
#define b_0000_0010 2 
#define b_0000_0011 3 
#define b_0000_0100 4 
#define b_0000_0101 5 
#define b_0000_0110 6 
#define b_0000_0111 7 
.......................
#define b_1111_1010 250 
#define b_1111_1011 251 
#define b_1111_1100 252 
#define b_1111_1101 253 
#define b_1111_1110 254 
#define b_1111_1111 255
                                    
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