main.h

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//define the port
sbit input1 = P0^0;     
sbit input2 = P0^1;     
sbit input3 = P0^2;     
sbit input4 = P0^3;     
sbit input5 = P0^4;          
sbit input6 = P0^5;       
sbit input7 = P0^6;     
sbit input8 = P0^7;
sbit com_input = P3^7;
      

sbit output8 = P2^7;  
sbit output7 = P2^6;  
sbit output6 = P2^5;  
sbit output5 = P2^4;  
sbit output4 = P2^3;  
sbit output3 = P2^2;  
sbit output2 = P2^1;  
sbit output1 = P2^0;
sbit com_output = P3^4;  
sbit LED = P3^2;       
sbit CODE_LED     = P3^5;
sbit BU      = P3^6;
sbit LE = P3^3;
sbit RT_CON = P3^2;

sbit A_4051 = P0^0;
sbit B_4051 = P0^1;
sbit C_4051 = P0^2;