Half Adder and Full Adder (Dataflow Modeling)

Half Adder (Dataflow Modeling):

 

module halfadder(

    input a,

    input b,

    output sum,

    output carry );

assign sum=a ^ b ;

assign carry=a & b;

endmodule

Full Adder (Dataflow Modeling):

 

module fulladder(

    input a,

    input b,

    input cin,

    output sum,

    output carry );

assign x=a ^ b;

assign sum=x^cin;

assign y=x & cin;

assign z=a & b;

assign carry= y | z;

endmodule