show_result.v

（1）当乡村公路无车时

module show_result(decodeout,indec);
output[6:0] decodeout;
input[3:0] indec;
reg[6:0] decodeout;
always @ (indec)
   begin
    case (indec)
4'd0:decodeout=7'b0000001;
4'd1:decodeout=7'b1001111;
4'd2:decodeout=7'b0010010;
4'd3:decodeout=7'b0000110;
4'd4:decodeout=7'b1001100;
4'd5:decodeout=7'b0100100;
4'd6:decodeout=7'b0100000;
4'd7:decodeout=7'b0001111;
4'd8:decodeout=7'b0000000;
4'd9:decodeout=7'b0000100;
default:decodeout=7'bx;
   endcase 
end
endmodule