BCD to 7 Segment Driver

/*=========================================

        +--0--+
        |     |
        5     1
        |     |
        +--6--+
        |     |
        4     2
        |     |
        +--3--+

common anode 7-segment displays
LOW turn the LED Segment ON
7'b6543210
=========================================*/
module bcd_7seg_decoder(
    input [3:0] bcd,
    output reg [6:0] seven_seg);

always @(*)
    case (bcd)
        4'b0000:seven_seg = 7'b1000000; // 0
        4'b0001:seven_seg = 7'b1111001; // 1
        4'b0010:seven_seg = 7'b0100100; // 2
        4'b0011:seven_seg = 7'b0110000; // 3
        4'b0100:seven_seg = 7'b0011001; // 4
        4'b0101:seven_seg = 7'b0010010; // 5
        4'b0110:seven_seg = 7'b0000010; // 6
        4'b0111:seven_seg = 7'b1111000; // 7
        4'b1000:seven_seg = 7'b0000000; // 8
        4'b1001:seven_seg = 7'b0010000; // 9
    endcase
endmodule