加法器(input:Cin,A,B;output:Cout,Sum)邏輯電路

縮短模組( assign sum;assign carry_out)

module adder1_behavorial (carry_out, sum, a, b, carry_in);
 input a, b, carry_in;
 output carry_out, sum;
  assign sum = a^b^carry_in;
  assign carry_out = a^b|carry_in|a|b;
endmodule