class Program
    {
        static void Main(string[] args)
        {
            //十进制转二进制
            Console.WriteLine("十进制166的二进制表示: " + Convert.ToString(166, 2));
            //十进制转八进制
            Console.WriteLine("十进制166的八进制表示: " + Convert.ToString(166, 8));
            //十进制转十六进制
            Console.WriteLine("十进制166的十六进制表示: " + Convert.ToString(166, 16));




    

            Timer t = new Timer();
            t.Elapsed += new ElapsedEventHandler(writesecond);

            t.Interval = 1000;
            t.Enabled = true;
            Console.ReadLine();
        }
        public static void writesecond(object source, ElapsedEventArgs e)
        {
            Console.Clear();
            Console.WriteLine("当前秒数：" + DateTime.Now.ToString());
        }
    }