题解 | #4位数值比较器电路#

`timescale 1ns/1ns

module comparator_4(
	input		[3:0]       A   	,
	input	   [3:0]		B   	,
 
 	output	 wire		Y2    , //A>B
	output   wire        Y1    , //A=B
    output   wire        Y0      //A<B
);
assign Y0 = ( A[3] < B[3] ) ? 1 : ( A[2] < A[2]  ) ? 1 : ( A[1] < B[1] ) ? 1 : ( A[0] < B[0] ) ? 1 : 0 ;
assign Y1 = (A == B) ? 1 : 0 ;
assign Y2= ~Y1 && ~Y0  ;
endmodule