题解 | #4位数值比较器电路#
4位数值比较器电路
https://www.nowcoder.com/practice/e02fde10f1914527b6b6871b97aef86d
`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 Y2 = (A[3] > B[3]) | ((A[3] == B[3]) && (A[2] > B[2])) | ((A[3] == B[3]) && (A[2] == B[2] && A[1] > B[1])) |((A[3] == B[3]) && (A[2] == B[2]) && (A[1] == B[1]) && (A[0] > B[0]));
//assign Y1 = ((A[3] == B[3]) && (A[2] == B[2]) && (A[1] == B[1]) && (A[0] == B[0]));
//assign Y0 = (A[3] < B[3]) | ((A[3] == B[3]) && (A[2] < B[2])) | ((A[3] == B[3]) && (A[2] == B[2] && A[1] < B[1])) |((A[3] == B[3]) && (A[2] == B[2]) && (A[1] == B[1]) && (A[0] < B[0]));
assign Y2 = (A[3] > B[3])?(1):(A[3]==B[3]?(A[2]>B[2]?(1):(A[2]==B[2])?(A[1]>B[1]?(1):(A[1]==B[1])?(A[0]>B[0]?(1):(0)):(0)):(0)):(0));
assign Y1 = (A[3] == B[3])?(A[2]==B[2]?(A[1]==B[1]?(A[0]==B[0]?(1):(0)):(0)):(0)):(0);
assign Y0 = (A[3] < B[3])?(1):(A[3]==B[3]?(A[2]<B[2]?(1):(A[2]==B[2])?(A[1]<B[1]?(1):(A[1]==B[1])?(A[0]<B[0]?(1):(0)):(0)):(0)):(0));
endmodule
