题解 | #四选一多路器#
四选一多路器
https://www.nowcoder.com/practice/cba4617e1ef64e9ea52cbb400a0725a3
`timescale 1ns/1ns
module mux4_1(
input [1:0]d1,d2,d3,d0,
input [1:0]sel,
output reg [1:0]mux_out//记得定义为reg形
);
//*************code***********//
always @(*)begin
case(sel)
0: mux_out = d3;
1: mux_out = d2;
2: mux_out = d1;
3: mux_out = d0;
default: mux_out = 2'bxx;
endcase
end
//*************code***********//
endmodule
