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module addbit (
a , // first input
b , // Second input
ci , // Carry input
sum , // sum output
co // carry output
);
//Input declaration
input a;
input b;
input ci;
//Ouput declaration
output sum;
output co;
//Port Data types
wire a;
wire b;
wire ci;
wire sum;
wire co;
//Code starts here
assign {co,sum} = a + b + ci;
endmodule // End of Module addbit
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