static void Main()
{
AsyncTimer printLetter = new AsyncTimer(PrintLetterOnConsole, 5, 500);
printLetter.Execute();
AsyncTimer printNumber = new AsyncTimer(PrintNumberOnConsole, 3, 1000);
printNumber.Execute();
}
static void Main()
{
AsyncTimer tester1 = new AsyncTimer(Example1, 30, 1000);
tester1.Execute();
}