半加器___

1.原理

2.代码

2.1 half_adder.v

module half_adder
(
	input	wire		in_1	,
	input 	wire		in_2	,
	
	output	wire		sum		,
	output  wire 		count	
	
);

assign {count,sum}=in_1+in_2;

endmodule

2.2 tb_half_adder.v

`timescale 1ns/1ns

module tb_half_adder();

reg in_1;
reg in_2;

wire sum;
wire count;

initial 
	begin
	in_1<=1'b0;
	in_2<=1'b0;
	end
	
always# 10 in_1={$random}%2;
always# 10 in_2={$random}%2;

initial
	begin
		$timeformat(-9,0,"ns",6);
		$monitor("@time %t:in_1=%b,in_2=%b,sum=%b,count=%b",$time,in_1,in_2,sum,count);
	end


half_adder half_adder_inst
(
	.in_1		(in_1),
    .in_2       (in_2),
				
    .sum	    (sum),
    .count      (count)
);

endmodule