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]
|| (A[3] ^~ B[3]) && (A[2] ^ B[2]) & A[2]
|| (A[3] ^~ B[3]) && (A[2] ^~ B[2]) && (A[1] ^ B[1]) & A[1]
|| (A[3] ^~ B[3]) && (A[2] ^~ B[2]) && (A[1] ^~ B[1]) && (A[0] ^ B[0]) & A[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]) & B[3]
|| (A[3] ^~ B[3]) && (A[2] ^ B[2]) & B[2]
|| (A[3] ^~ B[3]) && (A[2] ^~ B[2]) && (A[1] ^ B[1]) & B[1]
|| (A[3] ^~ B[3]) && (A[2] ^~ B[2]) && (A[1] ^~ B[1]) && (A[0] ^ B[0]) & B[0];
endmodule
