seven_segment.v.bak

module seven_segment (
    input [13:0] number,
    output [6:0] hex0, hex1, hex2, hex3
);
    reg [3:0] digit0, digit1, digit2, digit3;
    
    always @(*) begin
        digit0 = number % 10;
        digit1 = (number / 10) % 10;
        digit2 = (number / 100) % 10;
        digit3 = (number / 1000) % 10;
    end

    // Seven-segment display encoding
    function [6:0] seven_seg;
        input [3:0] digit;
        case (digit)
            4'd0: seven_seg = 7'b1000000;
            4'd1: seven_seg = 7'b1111001;
            4'd2: seven_seg = 7'b0100100;
            4'd3: seven_seg = 7'b0110000;
            4'd4: seven_seg = 7'b0011001;
            4'd5: seven_seg = 7'b0010010;
            4'd6: seven_seg = 7'b0000010;
            4'd7: seven_seg = 7'b1111000;
            4'd8: seven_seg = 7'b0000000;
            4'd9: seven_seg = 7'b0010000;
            default: seven_seg = 7'b1111111; // Blank display for undefined states
        endcase
    endfunction

    // Assign the seven-segment display values
    assign hex0 = seven_seg(digit0);
    assign hex1 = seven_seg(digit1);
    assign hex2 = seven_seg(digit2);
    assign hex3 = seven_seg(digit3);

endmodule